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Artykuły w czasopismach na temat „1D quantum gas”

Autor: Grafiati

Data publikacji: 26 października 2024

Data aktualizacji: 31 lipca 2025

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1

Guan, Xiwen. "Critical phenomena in one dimension from a Bethe ansatz perspective." International Journal of Modern Physics B 28, no. 24 (2014): 1430015. http://dx.doi.org/10.1142/s0217979214300151.

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This article briefly reviews recent theoretical developments in quantum critical phenomena in one-dimensional (1D) integrable quantum gases of cold atoms. We present a discussion on quantum phase transitions, universal thermodynamics, scaling functions and correlations for a few prototypical exactly solved models, such as the Lieb–Liniger Bose gas, the spin-1 Bose gas with antiferromagnetic spin-spin interaction, the two-component interacting Fermi gas as well as spin-3/2 Fermi gases. We demonstrate that their corresponding Bethe ansatz solutions provide a precise way to understand quantum man

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2

Laburthe Tolra, B., K. M. O'Hara, J. H. Huckans, et al. "Study of a 1D interacting quantum Bose gas." Journal de Physique IV (Proceedings) 116 (October 2004): 227–32. http://dx.doi.org/10.1051/jp4:2004116010.

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3

Sato, Jun, Rina Kanamoto, Eriko Kaminishi, and Tetsuo Deguchi. "Quantum states of dark solitons in the 1D Bose gas." New Journal of Physics 18, no. 7 (2016): 075008. http://dx.doi.org/10.1088/1367-2630/18/7/075008.

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4

Guan, Xi-Wen, and Feng He. "Professor Chen Ping Yang’s early significant contributions to mathematical physics." International Journal of Modern Physics B 33, no. 06 (2019): 1930002. http://dx.doi.org/10.1142/s0217979219300020.

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In the 60s Professor Chen Ping Yang with Professor Chen Ning Yang published several seminal papers on the study of Bethe’s hypothesis for various problems of physics. The works on the lattice gas model, critical behavior in liquid–gas transition, the one-dimensional (1D) Heisenberg spin chain, and the thermodynamics of 1D delta-function interacting bosons are significantly important and influential in the fields of mathematical physics and statistical mechanics. In particular, the work on the 1D Heisenberg spin chain led to subsequent developments in many problems using Bethe’s hypothesis. The

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5

Kaminishi, Eriko, Jun Sato, and Tetsuo Deguchi. "Recurrence Time in the Quantum Dynamics of the 1D Bose Gas." Journal of the Physical Society of Japan 84, no. 6 (2015): 064002. http://dx.doi.org/10.7566/jpsj.84.064002.

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6

Marino, E. C., and Flávio I. Takakura. "Massive Quantum Vortex Excitations in a Pure Gauge Abelian Theory in 2 + 1D." International Journal of Modern Physics A 12, no. 23 (1997): 4155–65. http://dx.doi.org/10.1142/s0217751x97002279.

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We introduce and study a pure gauge Abelian theory in 2 + 1D in which massive quantum vortex states do exist in the spectrum of excitations. This theory can be mapped in a three-dimensional gas of point particles with a logarithmic interaction, in the grand-canonical ensemble. We claim that this theory is the 2 + 1D analog of the sine–Gordon, the massive vortices being the counterparts of sine–Gordon solitons. We show that a symmetry breaking, order parameter, similar to the vacuum expectation value of a Higgs field does exist.

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7

Kinjo, Kayo, Eriko Kaminishi, Takashi Mori, Jun Sato, Rina Kanamoto, and Tetsuo Deguchi. "Quantum Dark Solitons in the 1D Bose Gas: From Single to Double Dark-Solitons." Universe 8, no. 1 (2021): 2. http://dx.doi.org/10.3390/universe8010002.

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We study quantum double dark-solitons, which give pairs of notches in the density profiles, by constructing corresponding quantum states in the Lieb–Liniger model for the one-dimensional Bose gas. Here, we expect that the Gross–Pitaevskii (GP) equation should play a central role in the long distance mean-field behavior of the 1D Bose gas. We first introduce novel quantum states of a single dark soliton with a nonzero winding number. We show them by exactly evaluating not only the density profile but also the profiles of the square amplitude and phase of the matrix element of the field operator

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8

Bouneb, I., and F. Kerrour. "Nanometric Modelization of Gas Structure, Multidimensional using COMSOL Software." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 4 (2018): 2014. http://dx.doi.org/10.11591/ijece.v8i4.pp2014-2020.

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In structures with GaAs, which are the structures most used, because of their physical and electronic proprieties, nevertheless seems a compromise between the increase of doping and reduced mobility. The use of quantum hetero structures can overcome this limitation by creating a 2D carrier gas. Using the COMSOL software this work present three models: the first model computes the electronic states for the heterojunction AlGaAs/GaAs in 1D dimension, the second model computes the electronic states for the heterojunction AlGaAs/GaAs but in 2D dimension (nanowire) and the third model we permitted

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9

I., Bouneb, and Kerrour F. "Nanometric Modelization of Gas Structure, Multidimensional using COMSOL Software." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 4 (2018): 2014–20. https://doi.org/10.11591/ijece.v8i4.pp2014-2020.

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In structures with GaAs, which are the structures most used, because of their physical and electronic proprieties, nevertheless seems a compromise between the increase of doping and reduced mobility. The use of quantum hetero structures can overcome this limitation by creating a 2D carrier gas. Using the COMSOL software this work present three models: the first model computes the electronic states for the heterojunction AlGaAs/GaAs in 1D dimension, the second model computes the electronic states for the heterojunction AlGaAs/GaAs but in 2D dimension (nanowire) and the third model we permitted

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10

Pan, Jun, Hao Shen, and Sanjay Mathur. "One-Dimensional SnO2Nanostructures: Synthesis and Applications." Journal of Nanotechnology 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/917320.

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Nanoscale semiconducting materials such as quantum dots (0-dimensional) and one-dimensional (1D) structures, like nanowires, nanobelts, and nanotubes, have gained tremendous attention within the past decade. Among the variety of 1D nanostructures, tin oxide (SnO2) semiconducting nanostructures are particularly interesting because of their promising applications in optoelectronic and electronic devices due to both good conductivity and transparence in the visible region. This article provides a comprehensive review of the recent research activities that focus on the rational synthesis and uniqu

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11

Kaminishi, Eriko, Jun Sato, and Tetsuo Deguchi. "Exact quantum dynamics of yrast states in the finite 1D Bose gas." Journal of Physics: Conference Series 497 (April 9, 2014): 012030. http://dx.doi.org/10.1088/1742-6596/497/1/012030.

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12

Lafont, Fabien, Amir Rosenblatt, Moty Heiblum, and Vladimir Umansky. "Counter-propagating charge transport in the quantum Hall effect regime." Science 363, no. 6422 (2019): 54–57. http://dx.doi.org/10.1126/science.aar3766.

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The quantum Hall effect, observed in a two-dimensional (2D) electron gas subjected to a perpendicular magnetic field, imposes a 1D-like chiral, downstream, transport of charge carriers along the sample edges. Although this picture remains valid for electrons and Laughlin’s fractional quasiparticles, it no longer holds for quasiparticles in the so-called hole-conjugate states. These states are expected, when disorder and interactions are weak, to harbor upstream charge modes. However, so far, charge currents were observed to flow exclusively downstream in the quantum Hall regime. Studying the c

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13

Mann, Joshua, Gerard Lawler, and James Rosenzweig. "1D Quantum Simulations of Electron Rescattering with Metallic Nanoblades." Instruments 3, no. 4 (2019): 59. http://dx.doi.org/10.3390/instruments3040059.

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Electron rescattering has been well studied and simulated for cases with ponderomotive energies of the quasi-free electrons, derived from laser–gas and laser–surface interactions, lower than 50 eV. However, with advents in longer wavelengths and laser field enhancement metallic surfaces, previous simulations no longer suffice to describe more recent strong field and high yield experiments. We present a brief introduction to and some of the theoretical and empirical background of electron rescattering emissions from a metal. We set upon using the Jellium potential with a shielded atomic surface

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14

CONSTANTINIDIS, C. P., F. TOPPAN, and F. P. DEVECCHI. "TWO-DIMENSIONAL N=1,2 SUPERSYMMETRIC CHIRAL AND DUAL MODELS." Modern Physics Letters A 13, no. 26 (1998): 2095–109. http://dx.doi.org/10.1142/s0217732398002217.

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Two-dimensional N=1,2 supersymmetric chiral models and their dual extensions are introduced and canonically quantized. Working within a superspace formalism, the non-manifest invariance under 2D-super-Poincaré transformations is proven. The N=1,2 super-Virasoro algebras are recovered as current algebras. The non-anomalous quantum invariances under 1D-superdiffeomorphisms (for chiral models) and N=1,2 superconformal transformations (for dual models) are shown to be a consequence of an N=1,2 super-Coulomb gas representation.

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15

Prokes, S. M., and Kang L. Wang. "Novel Methods of Nanoscale Wire Formation." MRS Bulletin 24, no. 8 (1999): 13–19. http://dx.doi.org/10.1557/s0883769400052842.

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In recent years, tremendous interest has been generated in the fabrication and characterization of nanoscale structures such as quantum dots and wires. For example, there is interest in the electronic, magnetic, mechanical, and chemical properties of materials with reduced dimensions. In the case of nanoscale semiconductors, quantum effects are expected to play an increasingly prominent role in the physics of nanostructures, and a new class of electronic and optoelectronic devices may be possible. In addition to new and interesting physics, the formation and characterization of nanoscale magne

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16

Hou, Ji-Xuan, Li-Ming Si, and Da-Bao Yang. "Low-lying Collective Modes of a 1D Dipolar Quantum Gas in an Anharmonic Trap." Brazilian Journal of Physics 47, no. 4 (2017): 377–81. http://dx.doi.org/10.1007/s13538-017-0506-z.

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17

Kovalenko, Konstantin L., Sergei I. Kozlovskiy, Nicolai N. Sharan, and Eugeniy F. Venger. "Bulk plasmon-limited mobility in semiconductors: from bulk to nanowires." Journal of Physics: Condensed Matter 35, no. 47 (2023): 475303. http://dx.doi.org/10.1088/1361-648x/acef88.

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Abstract Analytical expressions are obtained for the low-field mobility in semiconductors for scattering of three-dimensional (3D), two-dimensional (2D), and one-dimensional (1D) charged carriers by bulk plasmons. The consideration is based on the quantum kinetic equation and model distribution function in form of a shifted Fermi distribution and includes calculations of the dielectric function of 3D, 2D and 1D carriers in the random phase approximation. The resulting analytical expressions give dependences of the plasmon limited mobility on the dimensionality of charge carrier system, their d

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18

Kovalenko, Konstantin L., Sergei I. Kozlovskiy, Nicolai N. Sharan, and Eugeniy F. Venger. "Low field mobility in bulk GaN and its ternary AlGaN/GaN compounds (quantum kinetic approach)." Journal of Physics: Condensed Matter 36, no. 32 (2024): 325705. http://dx.doi.org/10.1088/1361-648x/ad44fb.

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Abstract Analytical expressions for the low-field mobility of charge carrier gases with three-(3D), two-(2D) and one-(1D) dimensionalities are obtained. Multi-ion ionized impurities scattering, acoustic and polar optic phonons are considered as scattering mechanisms. The calculated values of mobility are compared to known experimental data for bulk (3D) n-and p-type wurtzite, n-type zinc-blende GaN crystals and low dimensional (2D and 1D) ternary GaAlN compounds. The resulting analytical expressions give the dependences of mobility on dimensionality of charge carrier gas, its density, effectiv

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19

MIRONOV, A., and A. ZABRODIN. "THE ASYMPTOTICS OF THE CORRELATION FUNCTIONS IN (1+1)d QUANTUM FIELD THEORY FROM FINITE SIZE EFFECTS IN CONFORMAL THEORIES." International Journal of Modern Physics A 07, no. 16 (1992): 3885–909. http://dx.doi.org/10.1142/s0217751x92001745.

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Using the finite-size effects, the scaling dimensions and correlation functions of the main operators in continuous and lattice models of 1d spinless Bose-gas with pairwise interaction of rather general form are obtained. The long-wave properties of these systems can be described by the Gaussian model with central charge c=1. The disorder operators of the extended Gaussian model are found to correspond to some nonlocal operators in the XXZ Heisenberg antiferromagnet. This same approach is applicable to fermionic systems. Scaling dimensions of operators and correlation functions in the systems

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20

MA, YONG-LI, and HAICHEN ZHU. "A CLASS OF CLOSED SOLUTIONS FOR THE BOGOLIUBOV EXCITATIONS ON SMOOTH GROUND STATE OF A TRAPPED BOSE–EINSTEIN CONDENSATE." Modern Physics Letters B 19, no. 15 (2005): 713–20. http://dx.doi.org/10.1142/s0217984905008670.

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Bogoliubov–de Gennes equations (BdGEs) for collective excitations from a trapped Bose–Einstein condensate described by a spatially smooth ground-state wavefunction can be treated analytically. A new class of closed solutions for the BdGEs is obtained for the one-dimensional (1D) and 3D spherically harmonic traps. The solutions of zero-energy mode of the BdGEs are also provided. The eigenfunctions of the excitations consist of zero-energy mode, zero-quantum-number mode and entire excitation modes when the approximate ground state is a background Bose gas sea.

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21

Tan, Yunzhi, Qiang Zhu, Bing Wang, Jingran Shi, Dezhi Xiong, and Baolong Lyu. "Density–Density Correlation Spectra of Ultracold Bosonic Gas Released from a Deep 1D Optical Lattice." Entropy 26, no. 10 (2024): 854. http://dx.doi.org/10.3390/e26100854.

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Density–density correlation analysis is a convenient diagnostic tool to reveal the hidden order in the strongly correlated phases of ultracold atoms. We report on a study of the density–density correlations of ultracold bosonic atoms which were initially prepared in a Mott insulator (MI) state in one-dimensional optical lattices. For the atomic gases released from the deep optical lattice, we extracted the normalized density–density correlation function from the atomic density distributions of freely expanded atomic clouds. Periodic bunching peaks were observed in the density–density correlati

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22

Oganesov, Armen, George Vahala, Linda Vahala, Jeffrey Yepez, Min Soe, and Bo Zhang. "Unitary quantum lattice gas algorithm generated from the Dirac collision operator for 1D soliton–soliton collisions." Radiation Effects and Defects in Solids 170, no. 1 (2015): 55–64. http://dx.doi.org/10.1080/10420150.2014.988625.

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23

Hashimoto, Kazunari, Kazuki Kanki, Savannah Garmon, Satoshi Tanaka, and Tomio Petrosky. "On the effect of exceptional points in the Liouvillian dynamics of a 1D quantum Lorentz gas." Progress of Theoretical and Experimental Physics 2016, no. 5 (2016): 053A02. http://dx.doi.org/10.1093/ptep/ptw039.

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24

Stasyuk, I., R. Stetsiv, and O. Farenyuk. "Low-frequency dynamics of 1d quantum lattice gas: the case of local potential with double wells." Mathematical Modeling and Computing 5, no. 2 (2018): 235–41. http://dx.doi.org/10.23939/mmc2018.02.235.

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Hermann, Sascha, Simon Böttger, and Martin Hartmann. "(Invited) Suspended 1D/2D Nanomaterials: Progress on a Waferlevel Technology and Applications." ECS Meeting Abstracts MA2023-02, no. 30 (2023): 1530. http://dx.doi.org/10.1149/ma2023-02301530mtgabs.

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The use of 1D and 2D nanomaterials in emerging electronics and sensor technologies is becoming increasingly important due to their unique properties. Here we would like to highlight a scalable process for suspended nanomaterials that provides additional scope for the development of device properties that can be used in advanced concepts ranging from molecular sensing to quantum applications [1]. For example those applications benefit from arrangements as CNT-based nanoresonators with extremely high quality factors [2] usable for quantum bits with long coherence time [3] or suspended sensing na

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Djoufack, Z. I., A. Kenfack-Jiotsa, and J. P. Nguenang. "Quantum signature of breathers in 1D ultracold bosons in optical lattices involving next-nearest neighbor interactions." International Journal of Modern Physics B 31, no. 20 (2017): 1750140. http://dx.doi.org/10.1142/s0217979217501405.

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The dynamics and the energy spectrum of an ultracold gas of bosonic atoms in an optical lattice can be described by a Bose–Hubbard model for which the system parameters can be controlled by laser light. We study by means of the perturbation theory in addition to the numerical diagonalization, the energy spectrum and the related features of the band structures of the ultracold bosons in optical lattices containing a few number of quanta interacting with next-nearest neighbor interactions (NNNI) modeled by the Bose–Hubbard Hamiltonian. The energy spectra of such system display the bound states s

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Verma, Yogesh Kumar, Varun Mishra, and Santosh Kumar Gupta. "A Physics-Based Analytical Model for MgZnO/ZnO HEMT." Journal of Circuits, Systems and Computers 29, no. 01 (2019): 2050009. http://dx.doi.org/10.1142/s0218126620500097.

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In this paper, a physics-based compact model is developed for novel MgZnO/ZnO high-electron-mobility transistor (HEMT). Poisson’s equation coupled with 1D Schrödinger equation is solved self-consistently in the triangular quantum well to derive an expression of two-dimensional electron gas (2DEG) density with respect to gate voltage at the heterointerface of barrier (MgZnO) and buffer (ZnO) layers. A compact mathematical framework has been devised further for the first time for ZnO-based HEMT to the best of our knowledge using the expression of 2DEG density to compute surface potential, gate c

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Lias, S., L. Aissaoui, M. Bouledroua, and K. Alioua. "Quantum-mechanical transport properties of N+ (3P) and N+ (1D) ions in a neutral gas made of helium." Molecular Physics 118, no. 7 (2019): e1657601. http://dx.doi.org/10.1080/00268976.2019.1657601.

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Jakalase, Sindisiwe, Azile Nqombolo, Edson L. Meyer, Mojeed A. Agoro, and Nicholas Rono. "A Numerical Simulation Study of the Impact of Kesterites Hole Transport Materials in Quantum Dot-Sensitized Solar Cells Using SCAPS-1D." Nanomaterials 14, no. 24 (2024): 2016. https://doi.org/10.3390/nano14242016.

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Energy generation and storage are critical challenges for developing economies due to rising populations and limited access to clean energy resources. Fossil fuels, commonly used for energy production, are costly and contribute to environmental pollution through greenhouse gas emissions. Quantum dot-sensitized solar cells (QDSSCs) offer a promising alternative due to their stability, low cost, and high-power conversion efficiency (PCE) compared to other third-generation solar cells. Kesterite materials, known for their excellent optoelectronic properties and chemical stability, have gained att

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Salinas-Torres, Angélica, Hugo Rojas, José J. Martínez, Diana Becerra, and Juan-Carlos Castillo. "Synthesis, Characterization, and DFT Studies of N-(3,5-Bis(trifluoromethyl)benzyl)stearamide." Molbank 2021, no. 2 (2021): M1215. http://dx.doi.org/10.3390/m1215.

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The novel N-(3,5-bis(trifluoromethyl)benzyl)stearamide 3 was prepared in moderate yield by a solventless direct amidation reaction of stearic acid 1 with 3,5-bis(trifluoromethyl)benzylamine 2 at 140 °C for 24 h under metal- and catalyst-free conditions. This practical method was conducted in air without any special treatment or activation. The fatty acid amide 3 was fully characterized by IR, UV–Vis, 1D and 2D NMR spectroscopy, mass spectrometry, and elemental analysis. Moreover, molecular electrostatic potential studies, determination of quantum descriptors, fundamental vibrational frequencie

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Dybowski, Michal P., Piotr Holowinski, Rafal Typek, and Andrzej L. Dawidowicz. "Comprehensive analytical and structural characteristics of methyl 3,3-dimethyl-2-(1-(pent-4-en-1-yl)-1H-indazole-3-carboxamido)butanoate (MDMB-4en-PINACA)." Forensic Toxicology 39, no. 2 (2021): 481–92. http://dx.doi.org/10.1007/s11419-021-00573-y.

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Abstract Purpose The purpose of the study was to evaluate a complete analytical and structural characterization of methyl 3,3-dimethyl-2-(1-(pent-4-en-1-yl)-1H-indazole-3-carboxamido)butanoate (MDMB-4en-PINACA), a novel synthetic cannabinoid being the analogue of 5F-ADB. Methods The compound was analyzed by gas chromatography–mass spectrometry (GC–MS), high-resolution liquid chromatography–mass spectrometry (LC–MS), X-ray diffraction and spectroscopic methods, such as nuclear magnetic resonance (NMR) and Fourier-transform infrared (FTIR) spectroscopies. To derive MDMB-4en-PINACA molecular geom

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Datta, S. "A Path Integral Monte Carlo Study of Anderson Localization in Cold Gases in the Presence of Disorder." International Journal of Computational Methods 13, no. 06 (2016): 1650032. http://dx.doi.org/10.1142/s0219876216500328.

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We revisit the problem of Anderson localization in a trapped Bose–Einstein condensate in 1D and 3D in a disordered potential, applying Quantum Monte Carlo technique because the disorder cannot be treated accurately in a perturbative way as even a small amount of disorder can produce dramatic changes in the physical properties of the system under investigation. Till date no unambiguous evidence of localization has been observed for matter waves in 3D. Matter waves made up of cold atoms are good candidates for such investigations. Simulations are performed for Rb gas in continuous space using ca

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Hoque, Md Ikram Ul, Andrew Gibson, and Scott Donne. "(Digital Presentation) In-Situ Growth of SnO₂ Quantum Dots Onto Rgo for Supercapacitor Anodes." ECS Meeting Abstracts MA2022-02, no. 7 (2022): 2518. http://dx.doi.org/10.1149/ma2022-0272518mtgabs.

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SnO2 has been studied as a negative electrode material for supercapacitors [1]. However, direct use of pure SnO2 is not suitable because of its poor electrical conductivity. In order to mitigate this issue, various materials have been incorporated with pure SnO2, including graphene which is most favourable because of its high electrical conductivity (106 S/cm) and surface area (2630 m2/g), leading to highly conductive nanocomposites, and consequently high electrode capacitance [2]. Therefore, there is a growing interest to develop SnO2 anchored graphene nanocomposites for fabrications of the s

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Khan, Natalya, Fail Sultanov, Zhumabay Bakenov, Almagul Mentbayeva, and Batukhan Tatykayev. "Easy Scalable Solid-State Synthesis of Highly Efficient Synergetic 2D/1D Micro/Nanostructured g-C₃N₄/MeS (Me=Cd, Mo) Photocatalysts for Organic Dye Degradation and Hydrogen Evolution." ECS Meeting Abstracts MA2024-01, no. 35 (2024): 1992. http://dx.doi.org/10.1149/ma2024-01351992mtgabs.

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The global reserves of oil, gas, and coal are acknowledged finite, and their consumption rates are increasing each year [1]. Following Fujishima’s groundbreaking discovery of photocatalytic water splitting using TiO2 electrodes in 1972 [2], photocatalysis technology gained recognition as a promising approach for renewable energy and environmental conservation [3]. Since that pivotal moment, significant advancements have been made in developing preparation methods for highly efficient photocatalysts, predominantly centered on semiconductors like metal oxides and sulfides [4]. In this study, we

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Hoque, Md Ikram Ul, Andrew Gibson, and Scott Donne. "SnO₂-QDs/Rgo Nanocomposites for Lithium Ion Battery Anodes." ECS Meeting Abstracts MA2022-02, no. 7 (2022): 2519. http://dx.doi.org/10.1149/ma2022-0272519mtgabs.

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SnO2 is one of the most efficient materials for lithium ion battery (LIBs) anodes as it can theoretically provide a reversible capacity of 790 mAh/g (graphite, 372 mAh/g) for alloying reaction with lithium ion [(i) SnO 2 + 4 Li+ + 4e - = 2Li 2 O + Sn, (ii) Sn + xLi+ + xe- = LixSn (0 ≤ x ≤ 4.4)] during charge-discharge process [1]. In addition, SnO2 shows lowest operating potentials (average charge and discharge potentials: 0.3 V and 0.5 V vs. Li/Li+, respectively) in comparison with other transition metal oxides, facilitating a higher energy density when a full cell is constructed [2]. However

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RAJASHABALA, S., and R. KANNAN. "THEORETICAL INVESTIGATION ON THE OSCILLATOR STRENGTHS OF ELECTRIC DIPOLE TRANSITIONS IN A SPHERICAL QUANTUM DOT WITH HYDROGENIC DONOR IMPURITY." International Journal of Nanoscience 11, no. 02 (2012): 1250020. http://dx.doi.org/10.1142/s0219581x12500202.

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Dipole transition moment (DTM) of a hydrogenic donor in a spherical quantum dot of GaAs – Ga 1-x Al x As system with finite barrier confinement is obtained. The variational approach within the effective mass approximation is used as the framework for the calculation of donor ionization energy for a few excited states in quantum dot. Calculations of the DTM of an on-center shallow donor hydrogenic impurity in a GaAs quantum dot under hydrostatic pressure are presented. A linear increase in the DTM has been observed, when the dot radius increases from 2 nm to 100 nm. The important conclusions ar

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BUCHHOLZ, S. S., S. F. FISCHER, U. KUNZE, D. SCHUH, and G. ABSTREITER. "TRANSPORT PROPERTIES OF TUNNEL-COUPLED ONE-DIMENSIONAL CHANNELS FROM AN ELECTRON BILAYER SYSTEM IN PERPENDICULAR MAGNETIC FIELD." International Journal of Modern Physics B 23, no. 12n13 (2009): 2910–14. http://dx.doi.org/10.1142/s0217979209062530.

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In a tunnel coupled GaAs / AlGaAs electron bilayer system (BLS), we compare transport measurements of 1D quantum Hall (QH) edge channels with lithographically defined quantum point contacts (QPCs). The electron densities in both systems can be varied by a top-gate. In a perpendicular magnetic field, Landau level mixing is observed in the QH regime, and indications of crossings of spin split QPC subbands are detected.

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38

Kiener, C., L. Rota, K. Turner, et al. "3D-to-1D carrier scattering in GaAs V-groove quantum wires." Solid-State Electronics 40, no. 1-8 (1996): 257–60. http://dx.doi.org/10.1016/0038-1101(95)00260-x.

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ZHANG, LI. "SURFACE POLARON SELF-ENERGY AND EFFECTIVE MASS IN A WURTZITE GaN NANOWIRE." International Journal of Modern Physics B 23, no. 16 (2009): 3403–16. http://dx.doi.org/10.1142/s0217979209052741.

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The ground-state self-trapping energy and effective mass of surface polarons in a freestanding wurtzite GaN nanowire (NW) are studied using the second-order perturbation approach. Based on the dielectric continuum and Loudon's uniaxial crystal models, the polar optical phonon modes in the one-dimensional (1D) systems are analyzed, and the vibrating spectra of surface optical (SO) modes and electron–SO phonon coupling functions are discussed and analyzed. The calculations of the ground-state polaron self-trapping energy and the correction of effective mass due to the SO phonon modes in the 1D G

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40

Roshan, R., N. I. Cade, A. C. Maciel, et al. "2D–1D crossover from quantum well to quantum wire behaviour in GaAs v-groove structures." Physica E: Low-dimensional Systems and Nanostructures 13, no. 2-4 (2002): 174–77. http://dx.doi.org/10.1016/s1386-9477(01)00513-6.

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41

Xosrovashvili, Georgi, and Nima E. Gorji. "Numerical Simulation of Carbon Nanotubes/GaAs Hybrid PV Devices with AMPS-1D." International Journal of Photoenergy 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/784857.

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The performance and characteristics of a hybrid heterojunction single-walled carbon nanotube and GaAs solar cell are modelled and numerically simulated using AMPS-1D device simulation tool. The device physics and performance with different junction parameters are analysed. The results suggest that the open-circuit voltage changes very slightly by changing the electron affinity, acceptor and donor density while the other electrical parameters reach an optimum value. Increasing the concentration of a discrete defect density in the absorber layer decreases the electrical parameters. The current-v

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42

Jao, Ruei Fu, De Yu Luo, and Jin Zhi Lai. "Tunable Quasistationary States in a One-dimensional Quantum Heterostructure." Journal of Physics: Conference Series 2449, no. 1 (2023): 012039. http://dx.doi.org/10.1088/1742-6596/2449/1/012039.

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Abstract In this work, we focus on the quasistationary states, lifetime, and transmittance in opened quantum wells with biased and unbiased. In order to solve the quasibound states, the complex eigenenergies are solved in our calculation model by adaptive finite element method. We have demonstrated the accuracy to exam the numerical convergence. In this case, the 1D quantum heterostructure is commonly composed of GaAs and AlxGa1-xAs. With the different applied bias, the resonant tunneling and transmittance profiles could be changed, respectively. Increasing the thickness of the outermost barri

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43

Christen, J., E. Kapon, M. Grundmann, D. M. Hwang, M. Joschko, and D. Bimberg. "1D Charge Carrier Dynamics in GaAs Quantum Wires Carrier Capture, Relaxation, and Recombination." physica status solidi (b) 173, no. 1 (1992): 307–21. http://dx.doi.org/10.1002/pssb.2221730130.

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LI, YIMING. "NUMERICAL CALCULATION OF ELECTRON ENERGY STATES FOR NANOSCOPIC InAs/GaAs QUANTUM RINGS." International Journal of Modern Physics C 14, no. 08 (2003): 995–1005. http://dx.doi.org/10.1142/s0129183103005789.

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In this paper we study the electron energy states for nanoscopic semiconductor quantum rings. The effective one-band Hamiltonian approximation and the Ben Daniel–Duke boundary conditions are simultaneously considered in our three-dimensional (3D) model. The rectangular and ellipsoidal torus-shaped rings have been investigated with the 3D model. The proposed model is numerically solved with nonlinear iterative method. This computational method calculates the solution without any fitting parameters and is robust for all simulation cases. For InAs/GaAs quantum rings, it is found that (1) there is

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45

Reilly, D. J., L. N. Pfeiffer, G. R. Facer, et al. "Many-body Spin Interactions in Semiconductor Quantum Wires." Australian Journal of Physics 53, no. 4 (2000): 543. http://dx.doi.org/10.1071/ph00040.

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Zero length quantum wires (or point contacts) exhibit unexplained conductance structure close to 0.7 � 2e 2 /h in the absence of an applied magnetic field. We have studied the density- and temperature-dependent conductance of ultra-low-disorder GaAs/AlGaAs quantum wires with nominal lengths l=0 and 2�m, fabricated from structures free of the disorder associated with modulation doping. In a direct comparision we observe structure near 0.7 � 2e 2 /h for l = 0, whereas thel = 2�m wires show structure evolving with increasing electron density to 0.5 � 2e 2 /h in zero magnetic field, the value expe

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Shankar Sahoo, Girija, and Guru Prasad Mishra. "Design and modelling of InGaP/GaSb tandem cell with embedded 1D GaAs quantum superlattice." IET Circuits, Devices & Systems 14, no. 4 (2020): 471–76. http://dx.doi.org/10.1049/iet-cds.2019.0299.

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Shiri, J., J. Khalilzadeh, and SH Asadpour. "Optical properties of ⁸⁷Rb atomic vapor near the 1D photonic crystal bandgap and all-optical switching of transmitted light." Physica Scripta 97, no. 3 (2022): 035503. http://dx.doi.org/10.1088/1402-4896/ac50c6.

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Abstract We investigate the steady-state and dynamic behavior of the optical properties of the laser pulse in a GaAs/AlAs 1D photonic crystal (1DPC) with an atomic vapor defect layer. We chose the atomic vapor of the 87Rb as a defect layer by driving the probe field on the D2 transition between 52P3/2 - 52S1/2 levels through the 1DPC. The effect of the photonic bandgap (PBG) on the absorption and dispersion properties of the probe field is discussed. Moreover, the transmission and reflection coefficient of the 1DPC is controlled by applying the various value of the intensity of the coupling fi

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Kohl, M., D. Heitmann, P. Grambow, and K. Ploog. "Effect of the wire width on 1D magneto excitons in GaAs-AlGaAs quantum-well wires." Surface Science 229, no. 1-3 (1990): 248–51. http://dx.doi.org/10.1016/0039-6028(90)90881-8.

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Семенов, M. Б., В. Д. Кревчик, Д. O. Филатов та ін. "Диссипативное туннелирование электронов в вертикально связанных двойных асимметричных квантовых точках InAs/GaAs(001)". Журнал технической физики 91, № 10 (2021): 1431. http://dx.doi.org/10.21883/jtf.2021.10.51354.66-21.

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We report on the results of experimental studies of the photoelectric properties of a GaAs p-i-n photodiode with InAs/GaAs(001) double asymmetric quantum dots (DAQDs) grown by self-assembling in Metal Organic Vapor Phase Epitaxy (MOVPE) process. Three peaks were observed in the dependence of the photocurrent on the reverse bias measured at monochromatic photoexcitation of the DAQDs at the wavelength corresponding to the energy of interband optical transitions between the ground hole and electron states in the bigger QDs. These peaks were related to the tunneling of the photoexcited electrons b

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Gu, Lehua, Shuang Wu, Shuai Zhang, and Shiwei Wu. "Nanoscale Impact Ionization and Electroluminescence in a Biased Scanning-Tunneling-Microscope Junction." Chinese Physics Letters 39, no. 3 (2022): 037801. http://dx.doi.org/10.1088/0256-307x/39/3/037801.

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Electroluminescence from a p-type GaAs(110) surface was induced by tunneling electrons in a scanning tunneling microscope under both polarities of bias voltage. The optical spectra exhibit a polarity-independent luminescence peak at 1.47 eV resulting from the exciton recombination. However, the quantum yield of photon emission at negative bias voltage is two orders of magnitude weaker than that at positive bias voltage. Moreover, the luminescence at negative bias voltage shows the linear dependence of bias voltage, distinct from the rapid rise due to resonant electron injection at positive bia

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