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Dissertations / Theses on the topic 'Two-temperature electrons'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Takizawa, Motokazu. "TWO-TEMPERATURE NATURE OF INTRACLUSTER MEDIUM : SHOCK HEATING AND NONEQUIPARTITION OF ELECTRONS AND IONS." 京都大学 (Kyoto University), 1999. http://hdl.handle.net/2433/157174.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(理学)<br>甲第7650号<br>理博第2035号<br>新制||理||1086(附属図書館)<br>UT51-99-G244<br>京都大学大学院理学研究科物理学・宇宙物理学専攻<br>(主査)助教授嶺重慎, 教授稲垣省五, 教授大谷浩<br>学位規則第4条第1項該当

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2

Devitt, Andrew Maurice. "Time and angle resolved phonon absorption in the fractional quantum hall regime." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342525.

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3

Chatzakis, Ioannis. "Ultrafast dynamics of electrons and phonons in graphitic materials." Diss., Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1728.

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4

Tanaka, Yasunori, Yasunobu Yokomizu, Motohiro Ishikawa, and Toshiro Matsumura. "Particle Composition of High-Pressure SF_6 Plasma with Electron Temperature Greater than Gas Temperature." IEEE, 1997. http://hdl.handle.net/2237/7280.

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5

Hedberg, James. "Low temperature force microscopy on a deeply embedded two dimensional electron gas." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=97016.

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Experimental physics in the low temperature limit has consistently produced major advances for condensed matter research. Likewise, scanning probe microscopy offers a unique view of the nanometer scale features that populate the quantum landscape. This work discusses the merger of the two disciplines via the development of the Ultra Low Temperature Scanning Probe Microscope, the ULT-SPM. We focus on the novel characterization of an exotic condensed matter system: a deeply buried two dimensional electron gas with a cleaved edge overgrowth geometry. By coupling the dynamics of the force sensing

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6

Alontseva, D. L., A. L. Krasavin, T. A. Kolesnikova, et al. "Computer Simulation of Temperature Profiles for E-beam Modification of Ni- Based Plasma Detonation Coatings." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35414.

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The paper presents the calculation of the distribution of the temperature profile in two-layer metallic materials under direct current low-energy electron beam irradiation and proposes explicit parameters of the electron beam for modification of thick (150-300 microns) plasma detonation Ni-based coatings by irradiation. Ni-based coatings deposited onto steel substrates were interpreted as a Ni-Fe two-layer sample irradiated on the coating side. The numerical simulation methods were used for solving the heat equation. The model takes into account the electron beam travelling, dependence of

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7

Yu, Wing Wa. "Low temperature spintronics : probing charge and spin states with two-dimensional electron gas." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12580.

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This thesis is based on two low temperature experiments in spintronics - physics and engineering of electronic spins. The measurements were performed on a GaAs/AlGaAs two-dimensional electron gas with geometries defined by tunable surface gates. The first experiment is about detection of electrons in a quantum dot. A quantum point contact (QPC) and a quantum wire (QW) is coupled to a single-lead few-electron quantum dot. By measuring the conductance of the QPC and the QW, one can gain information on the average number of electrons in the dot as well as energy-level structure of the dot. The se

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8

Rushforth, Andrew William. "The transport properties of two dimensional electron gases in spatially random magnetic fields." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342029.

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9

Ubah, Chinedu Gideon. "Design of high temperature and pressure electrochemical cell and corrosion chemistry of alloy 625 in high temperature and high pressure aqueous media using a two-electrode electrochemical method." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/28201.

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As aqueous processing moves to higher temperatures and pressures to take advantage of increased kinetics, there is a need to develop and test appropriate reactor materials to ensure that corrosion is minimized. Corrosion testing often requires an electrochemical approach for a comprehensive understanding of the range of behaviors exhibited from a corroding metal or alloy in different environments. Prior art of designs for electrodes, associated pressure vessels and sealing technology is presented. The development of an apparatus and methods for high temperature and high pressure el

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10

Goble, Nicholas James. "ELECTRONIC TRANSPORT AT SEMICONDUCTOR AND PEROVSKITE OXIDE INTERFACES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1454002713.

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11

Liu, Shuhao. "Electronic Transport in Functional Materials and Two-Dimensional Hole System." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1522893320666086.

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12

Dou, Ziwei. "Investigation on high-mobility graphene hexagon boron nitride heterostructure nano-devices using low temperature scanning probe microscopy." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283618.

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This thesis presents several experiments, generally aiming at visualising the ballistic and topological transport on the high-mobility graphene/boron nitride heterostructure using the scanning gate microscope. For the first experiment, we use the scanning gate microscopy to map out the trajectories of ballistic carriers in high-mobility graphene encapsulated by hexagonal boron nitride and in a weak perpendicular magnetic field. We employ a magnetic focusing transport configuration to image carriers that emerge ballistically from an injector, follow a cyclotron path due to the Lorentz force fro

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13

Fang, Jieping. "New Methods to Create Multielectron Bubbles in Liquid Helium." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10673.

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An equilibrium multielectron bubble (MEB) in liquid helium is a fascinating object with a spherical two-dimensional electron gas on its surface. After it was first observed a few decades ago, a plethora of physical properties of MEBs, for example, a tunable surface electron density, have been predicted. In this thesis, we will discuss two new methods to create MEBs in liquid helium. Before the discussion, the way to generate a large number of electrons in a low temperature system will be discussed, including thermionic emission and field emission in helium. In the first new method to make MEB

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14

Tang, Yanping, Dongqing Wu, Yiyong Mai, et al. "A two-dimensional hybrid with molybdenum disulfide nanocrystals strongly coupled on nitrogen-enriched graphene via mild temperature pyrolysis for high performance lithium storage." Royal Society of Chemistry, 2014. https://tud.qucosa.de/id/qucosa%3A36311.

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A novel 2D hybrid with MoS₂ nanocrystals strongly coupled on nitrogen-enriched graphene (MoS₂/NGg-C₃N₄) is realized by mild temperature pyrolysis (550 °C) of a self-assembled precursor (MoS₃/g-C₃N₄–H⁺/GO). With rich active sites, the boosted electronic conductivity and the coupled structure, MoS₂/NGg₋C₃N₄ achieves superior lithium storage performance.

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15

Madhavi, S. "Carrier Mobility And High Field Transport in Modulation Doped p-Type Ge/Si1-xGex And n-Type Si/Si1-xGex Heterostructures." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/294.

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Modulation doped heterostructures have revolutionized the operation of field effect devices by increasing the speed of operation. One of the factors that affects the speed of operation of these devices is the mobility of the carriers, which is intrinsic to the material used. Mobility of electrons in silicon based devices has improved drastically over the years, reaching as high as 50.000cm2/Vs at 4.2K and 2600cm2/Vs at room temperature. However, the mobility of holes in p-type silicon devices still remains comparatively lesser than the electron mobility because of large effective masses and co

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16

Madhavi, S. "Carrier Mobility And High Field Transport in Modulation Doped p-Type Ge/Si1-xGex And n-Type Si/Si1-xGex Heterostructures." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/294.

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Modulation doped heterostructures have revolutionized the operation of field effect devices by increasing the speed of operation. One of the factors that affects the speed of operation of these devices is the mobility of the carriers, which is intrinsic to the material used. Mobility of electrons in silicon based devices has improved drastically over the years, reaching as high as 50.000cm2/Vs at 4.2K and 2600cm2/Vs at room temperature. However, the mobility of holes in p-type silicon devices still remains comparatively lesser than the electron mobility because of large effective masses and co

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17

Wang, Yin-Yu. "Réseaux supraconducteurs : température critique et états mixtes." Grenoble 1, 1987. http://www.theses.fr/1987GRE10060.

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Les effets de quantification du flux magnetique sur des reseaux supraconducteurs bidimensionnels sont etudies dans ce memoire. Du point de vue theorique, la temperature de transition supraconductrice en fonction du champ magnetique applique est determinee en resolvant les equations d'alexander pour divers reseaux : periodiques, quasiperiodiques et fractals. Quelques un de ces reseaux submicroniques ont ete realises par lithographie electronique. Leurs temperatures critiques sont mesurees et l'accord entre la theorie et l'experience est discute. A l'interieur de la phase supraconductrice, les v

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18

Hsieh, Ween-Hsing, and 謝文興. "Scattering lifetime and phonon emission of two dimensional electron systems at low temperature." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/89899706219137203102.

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19

Chang, Feng-Rung, and 張峰榮. "Temperature Dependence of The High-Frequency Magnetotransport Properties of Two Dimensional Electron system." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/4xh24x.

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碩士<br>國立中興大學<br>物理學系<br>93<br>In this thesis, we study the high-frequency magneto- transport properties of the GaAs/InGaAs heterostructure by using a coplanar waveguide ( CPW ) and a home -made high-sentsitivity microwave vector detection system. We have measured the complex conductivity σxx of a two-dimensional electron system in the quantum Hall regime for frequency f between 0.3 and 6GHz at sample temperature, T≧ 0.38K. We observed the Shubnikov-de Hass (SdH) oscillations at low fields and the integer quantum Hall effect (IQHE) at high fields. The Re{σxx} versus Im{σxx} curves of the observ

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20

Lai, Chien Chuan, and 賴建全. "Transport studies of two-dimensional electron gas in ZnSSe/ZnCdSe at low temperature and high magnetic field." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/63189847907280077943.

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碩士<br>國立中山大學<br>物理學系<br>87<br>We studied the transport properties of two-dimensional electron gas in ZnS0.06Se0.94/Zn0.8Cd0.2Se at low temperature and high magnetic field by SdH measurement. We found that the electron density increased with decreasing spacer thinkness for the non-illuminated samples. After illumination, it started to decrease and reach saturated values with a long time illumination. So these samples(Z204、Z205 and Z206) are NPPC materials. And it is interesting that the changed quantities of saturated concentration are the same in these samples.

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21

Chiu, Wan-ting, and 邱婉婷. "Transport studies of two-dimensional electron gas in InGaAs/AlInAs nano wire at low-temperature and high magnetic field." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/q4kgm9.

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碩士<br>國立中山大學<br>物理學系研究所<br>96<br>We have studied the electronic properties of InGaAs/AlInAs nano wire by using Shubnikov-de Hass (SdH)measurement at 0.3K.In order to study the effect of the channel width on the 2DEG,we made the nanometer-scaled 2DEG channels varied with different widths from 700 nm to 1400 nm by focus ion beam. On the AlGaAs/AlInAs nanowires we have studied I-V characteristics with gate-voltage and observed the work range from -3 V to 3 V. After illuminating at 0.3 K, the carrier density of the sample InGaAs-1400 nm increased and observed the persistent photoconductivity effe

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22

Yao, Wen-Jiaw, and 姚文醮. "Transport Studies of Two-Dimensional Electron Gas in AlGaN/GaN Quantum Well at Low Temperature and High Magnetic Field." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/99767580470644091400.

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碩士<br>國立中山大學<br>物理學系研究所<br>91<br>We have studied the electronic properties of AlxGa1-xN/GaN heterostructures by using Shubnikov–de Haas(SdH) measurement. Two SdH oscillations were detected on the samples of x=0.35 and 0.31, due to the population of the first two subbands with the energy separations of 128 and 109 meV, respectively. For the sample of x=0.25, two SdH oscillations beat each other, probably due to a finite zero-field spin splitting. The spin-splitting energy is equal to 9.0 meV. The samples also showed a persistent photoconductivity effect after illuminating by blue light-emitting

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23

Ho, Pei-Chi, and 何珮綺. "Transport studies of two-dimensional electron gas in GaAs/Al0.3Ga0.7As double quantum well at low temperature and high magnetic field." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/44225399162143297287.

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碩士<br>國立中山大學<br>物理學系研究所<br>91<br>The two-dimensional electron system in strongly coupled GaAs/Al0.3Ga0.7As double quantum wells has been studied by Shubnikov-de Haas（SdH）measurements. The degenerate subbands of the double quantum wells are lift into two subbands with a symmetric or anti- symmetric z-direction wave function. We observed that the SdH oscillation due to the second subband of anti-symmetric wave function. The effective mass of the second subband is linearly dependent on the magnetic field range from 0.680 T to 1.964 T. The mass enhancement for the double-quantum-well with an equal

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24

"Gallium-Based Room Temperature Liquid Metals and its Application to Single Channel Two-Liquid Hyperelastic Capacitive Strain Sensors." Master's thesis, 2015. http://hdl.handle.net/2286/R.I.29675.

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abstract: Gallium-based liquid metals are of interest for a variety of applications including flexible electronics, soft robotics, and biomedical devices. Still, nano- to microscale device fabrication with these materials is challenging because of their strong adhesion to a majority of substrates. This unusual high adhesion is attributed to the formation of a thin oxide shell; however, its role in the adhesion process has not yet been established. In the first part of the thesis, we described a multiscale study aiming at understanding the fundamental mechanisms governing wetting and adhesion o

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25

(10726149), Weirong Yuan. "PHASE CHANGE AND ABLATION STUDY OF METALS BY FEMTOSECOND LASER IRRADIATION USING HYBRID TTM/MD SIMULATIONS." Thesis, 2021.

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<div>The interactions of femtosecond lasers with gold targets were investigated with a numerical method combining molecular dynamics (MD) and the two-temperature model (TTM). Previous works using MD-TTM method did not consider all the thermodynamic parameters and the interatomic potential dependent of the electron temperature simultaneously. Therefore, we developed a LAMMPS function to achieve this. To accurately capture the physics behind the interactions, we also included the electron blast force from free electron pressure and the modified Fourier law with steep electron temperature gradien

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