Relevant bibliographies by topics / Impurity graphene

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Impurity graphene'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Impurity graphene"

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Inglot, Michał, and Tomasz Szczepański. "Impurity-Induced Magnetization of Graphene." Materials 15, no. 2 (2022): 526. http://dx.doi.org/10.3390/ma15020526.

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We present a model of impurity-induced magnetization of graphene assuming that the main source of graphene magnetization is related to impurity states with a localized spin. The analysis of solutions of the Schrödinger equation for electrons near the Dirac point has been performed using the model of massless fermions. For a single impurity, the solution of Schrödinger’s equation is a linear combination of Bessel functions. We found resonance energy levels of the non-magnetic impurity. The magnetic moment of impurity with a localized spin was accounted for the calculation of graphene magnetizat
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Yarmohammadi, Mohsen, Houshang Araghi Kazzaz, and Mohammad Saeed Feali. "Orbital magneto-electronic heat capacity of hydrogenated graphene in the presence of dilute charged impurity." International Journal of Modern Physics B 31, no. 08 (2017): 1750053. http://dx.doi.org/10.1142/s0217979217500539.

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In this paper, the effect of dilute charged impurity and external magnetic field on orbital-resolved density of states (DOS) and electronic heat capacity (EHC) of a monolayer hydrogenated graphene which is called chair-like graphane is investigated within the Harrison model and Green’s function technique. The self-consistent Born approximation has been implemented to describe the effect of scattering between electrons and dilute charged impurities. Our results show that the graphane is a semiconductor and its band gap decreases with impurity and magnetic field. EHC reaches almost linearly to S
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Nghiem, Hoa, Lam Pham, Linh Nguyen, and Hùng Thế Đặng. "Hybridization of an s-wave impurity with graphene lattice." Communications in Physics 34, no. 2 (2024): 163. http://dx.doi.org/10.15625/0868-3166/20492.

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Hybridization function is a quantity characterizing electron hoppings between an impurity and a host material in which the impurity resides, a full understandinging of it is crucial for studying correlation effects in various impurity problems. This work studies the hybridization function for the Anderson impurity model describing a single-orbital impurity on a honeycomb lattice simulating graphene and presents a calculation approach to obtain this function at low energy. Within this approach, the general form of the hybridization function in graphene is presented and analytical expressions of
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Feodosyev, S. B., V. A. Sirenko, E. S. Syrkin, E. V. Manzhelii, I. S. Bondar, and K. A. Minakova. "Localized and quasi-localized energy levels in the electron spectrum of graphene with isolated boron and nitrogen substitutions." Low Temperature Physics 49, no. 1 (2023): 30–37. http://dx.doi.org/10.1063/10.0016473.

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Based on the calculation and analysis of local Green’s functions of impurity atoms of low concentration in a two-dimensional graphene lattice, the conditions for the formation and characteristics of local discrete levels with energies lying outside the band of the quasi-continuous spectrum and quasi-localized states with energies near the Fermi one are determined. Specific calculations were performed for boron and nitrogen impurity atoms, which can actually replace carbon in graphite and graphene nanostructures. For a boron impurity that forms local discrete levels outside the band of the quas
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Figueroa, Kelotchi S., Natalya A. Zimbovskaya, Nicholas J. Pinto, Chengyu Wen, and A. T. Charlie Johnson. "Temperature dependent charge transport in ferroelectrically gated graphene far from the Dirac point." AIP Advances 12, no. 7 (2022): 075008. http://dx.doi.org/10.1063/5.0096776.

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Charge transport in ferroelectric (FE) gated graphene far from the Dirac point (DP) was studied in the temperature range 300 K < T < 350 K. A non-monotonic/monotonic/non-monotonic behavior in the conductivity [σ(T)] was observed as one moved away from the DP. As the gate polarization increased, additional impurity charges were compensated, which reduced charge scattering. The uncompensated charges doped graphene and σ(T) switched to a monotonic increase with increasing T. However, far from the DP, the polarization reached saturation, which resulted in still lower impurity charge scatteri
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Chen, J. H., C. Jang, S. Adam, M. S. Fuhrer, E. D. Williams, and M. Ishigami. "Charged-impurity scattering in graphene." Nature Physics 4, no. 5 (2008): 377–81. http://dx.doi.org/10.1038/nphys935.

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Titov, M. "Impurity-assisted tunneling in graphene." Europhysics Letters (EPL) 79, no. 1 (2007): 17004. http://dx.doi.org/10.1209/0295-5075/79/17004.

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BELOSLUDTSEVA, A. A., N. G. BOBENKO, and T. A. SAPEZHINSKAYA. "THERMOPOWER OF GRAPHENE: THE ROLE OF IMPURITY ATOMS AND STRUCTURAL DISORDER." Izvestiya vysshikh uchebnykh zavedenii. Fizika 67, no. 11 (2024): 92–96. https://doi.org/10.17223/00213411/67/11/10.

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A theoretical study of the influence of impurity atoms and defects on the thermopower of single-layer graphene is presented. The temperature dependences of thermopower at different impurity concentrations and locations are considered. It is shown that structural features change the thermopower including changes in sign and magnitude by several orders. The found relationship between the thermopower and graphene structure is essential for controlling its thermoelectric properties.
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Neupane, Hari Krishna, and Narayan Prasad Adhikari. "First-Principles Study of Vacancy and Impurities Defects in Graphene." Amrit Research Journal 2, no. 01 (2021): 93–102. http://dx.doi.org/10.3126/arj.v2i01.40746.

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In this work, we have studied the electronic and magnetic properties of 1C atom vacancy defects in graphene (1Cv-d-G), 1N atom impurity defects in graphene (1NI-d-G) and 1O atom impurity defects in graphene (1OI-d-G) materials through first principles calculations based on spin-polarized density functional theory (DFT) method, using computational tool Quantum ESPRESSO (QE) code. From band structure and density of states (DOS) calculations, we found that supercell structure of monolayer graphene is a zero bandgap material. But, electronic bands of 1Cv-d-G, 1NI-d-G and 1OI-d-G materials split ar
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Konobeeva, Natalia, and Mikhail Belonenko. "Conductivity of impurity graphene nanoribbons and gate electric field." Modern Physics Letters B 31, no. 36 (2017): 1750340. http://dx.doi.org/10.1142/s0217984917503407.

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In this paper, we investigate the influence of a gate electric field on the tunneling current for the contact of impurity graphene nanoribbon with a metal or quantum dots. Based on the Hamiltonian for graphene in the tight-binding approximation, the density of states is calculated, which allows us to obtain a tunneling current. We analyze the effect of the field magnitude on the detecting possibility of an impurity in the graphene nanoribbon. A sufficient change of current–voltage characteristic (CVC) of the contact is observed, with an increase in the constant electric field applied parallel
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Dissertations / Theses on the topic "Impurity graphene"

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Dutreix, Clément. "Impurity and boundary modes in the honeycomb lattice." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112217/document.

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La présente thèse s’articule autour de deux sujets. Le premier concerne la localisation des électrons en présence d’impuretés ou d’interfaces dans le réseau hexagonal. Le deuxième, en revanche, traite de l’accumulation de spin dans un supraconducteur hors-Équilibre de type s.Le graphène est la principale motivation de la première partie. Ce matériau bidimensionnel consiste en un feuillet d’atomes de carbones et peut être décrit comme un réseau hexagonal, c’est-à-dire un réseau de Bravais triangulaire avec un motif diatomique. La structure de bande électronique révèle alors l’existence d’électr
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Gislesen, Halvor, and Hans Skarsvåg. "Renormalised Intrinsic and Extrinsic Impurity Induced Spin-orbit Scattering in Graphene." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19025.

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We study the effect of an impurity potential on spin-memory loss in graphene. Various general methods for finding the spin-orbit related effect of a slowly varying impurity potential on a semiconductor have been examined. We have also revisited problems concerning electronic properties and spin relaxation in graphene. To this end, the bandstructure for graphene has been calculated through analytical and computational methods. The following results have been reproduced: Low energy excitations behave like massless relativistic particles with an effective speed of light at roughly 10^6 m/s. Intri
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May, Daniel [Verfasser], Frithjof [Akademischer Betreuer] Anders, and Götz S. [Gutachter] Uhrig. "Numerical study of magnetic impurities in graphene and steady-state transport in quantum impurity systems / Daniel May ; Gutachter: Götz S. Uhrig ; Betreuer: Frithjof Anders." Dortmund : Universitätsbibliothek Dortmund, 2020. http://d-nb.info/1212661656/34.

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Конобеева, Н. Н., та А. А. Полунина. "Энтропия Реньи для примесного графена". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39354.

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В настоящей работе проводилось моделирование движения электрона по поверхности квадратной и гексагональной решеток. Точки пересечения линий называются узлами, на них мы и помещали электроны случайным образом. В рамках одной из предыдущих работ уже исследовалась задача о перколяционном пути в решетке графена. Целью же данной работы было отыскание замкнутых областей, составленных из связей – кластеров, которые иначе называются коралями и определение зависимости для последующего расчета различных характеристик графена с примесями на основе свойства конформности.
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McIntosh, Ross William. "Quantum transport through impurity clusters in carbon nano-materials." Thesis, 2014.

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Modified graphene and low dimensional carbon nano-electronic devices have the potential to supersede current technologies in many respects although manufacturing and understanding these materials poses a significant challenge which requires an incremental approach. Doping of graphene, a prerequisite for modifying the electronic properties, is still poorly understood.Band-modulation is therefore difficult to control. Resonant tunneling induced through the incorporation of impurity clusters has not yet been addressed. On the other hand electronspin correlations in modified graphenes have hardly
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ThanhThuy, Tran Ngoc, and 陳玉清水. "Studies on Density of state Correction Induced by Magnetic Impurity on Graphene." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/92704692124583895621.

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碩士<br>國立成功大學<br>物理學系碩博士班<br>101<br>Based on the mean field approximation and the Green’s function techniques, we have reviewed the paper “Localized Magnetic states in Graphene” published by Uchoa et al. In this thesis, we have extended their work by applying the mean field approximation to the equation of motion instead of applying it directly to the hamiltonian as Uchoa’s work and obtained the density of state correction induced by magnetic impurity on graphene.
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Book chapters on the topic "Impurity graphene"

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Repetsky, S. P., I. G. Vyshyvana, S. P. Kruchinin, R. M. Melnyk, and A. P. Polishchuk. "Impurity Ordering Effects on Graphene Electron Properties." In Advanced Nanomaterials for Detection of CBRN. Springer Netherlands, 2020. http://dx.doi.org/10.1007/978-94-024-2030-2_3.

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Li, Chuan, Sophie Guéron, and Hélène Bouchiat. "Quantum Transport in Graphene: Impurity Scattering as a Probe of the Dirac Spectrum." In Progress in Mathematical Physics. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-32536-1_3.

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Lei, Zhen, Hongya Li, Bingzhai Yu, and Binghan Geng. "Preparation and Properties of Graphite Surface Vitrification Y2O3 Coating." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_62.

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AbstractThe Mo-Y2O3 composite coating was prefabricated on the surface of the graphite crucible by plasma spraying, and then the coating surface was remelted by high-power laser. The coating was subjected to SEM analysis, X-ray diffraction, bond strength testing, and molten terbium metal corrosion test. The results show, After laser cladding treatment, the problems of pores and unmelted particles on the surface of the Mo-Y2O3 coating have been significantly improved, and the porosity has been reduced to less than 1.5%, Vitrified Y2O3 with a thickness of about 80–120 μm and columnar crystal gro
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Biske, N. S., T. P. Bubnova, and A. G. Nikiforov. "Micron-Sized Mineral Inclusions and Impurity Phases in Graphite from the Ihala Deposit, Karelia, Russia." In Springer Proceedings in Earth and Environmental Sciences. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23390-6_54.

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A. Löthman, Per. "Graphene Nanopores." In Nanopores. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98737.

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Graphene is a two-dimensional, atomic thin, usually impermeable nanomaterial with astonishing electrical, magnetic and mechanical properties and can therefore at its own right be found in applications as sensors, energy storage or reinforcement in composite materials. By introducing nanoscale pores graphene alter and extend its properties beyond permeability. Graphene then resembles a nanoporous sensor, a nanoporous, atomic thin membrane which opens up for such varied applications such as water purification, industrial waste water treatment, mineral recovery, analytical chemistry separation, m
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Ezhumalai, Yamuna, Prabakaran Kumaresan, and Tirupathy Jayapalan. "Graphite Carbon Nitride." In Photocatalysts - New Perspectives [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104976.

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Graphitic carbon nitride (g-C3N4), is a synthetic polymer made up of carbon, nitrogen, and some impurity hydrogen that is linked together using tris-triazine-based patterns. Because of the inclusion of N and H atoms, it has electron-rich characteristics, basic surface functions, and H-bonding motifs, compared to the bulk of carbon materials. Consequently, it’s seen as a possible replacement for carbon in material applications. A brief introduction to g-C3N4 is included in this chapter, as are the methods for synthesizing this material with various textural structures and surface morphologies,
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AMEMIYA, S., T. MASUDA, I. KOHMURA, et al. "Hydrogen Retention and Impurity Deposition of JT–60 Graphite Divertor tiles." In Fusion Technology 1992. Elsevier, 1993. http://dx.doi.org/10.1016/b978-0-444-89995-8.50022-9.

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Conference papers on the topic "Impurity graphene"

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Saha, K., I. Paul, K. Sengupta, Alka B. Garg, R. Mittal, and R. Mukhopadhyay. "STM Spectroscopy of Impurity doped Graphene." In SOLID STATE PHYSICS, PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010. AIP, 2011. http://dx.doi.org/10.1063/1.3605728.

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Patel, Digish K., and A. C. Sharma. "Electron-impurity scattering rate in doped bilayer graphene." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4710329.

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Pang, Jiu, Xiaosong Ma, Qun Yang, et al. "Enhancement of H2S detection in impurity-doped graphene." In 2016 17th International Conference on Electronic Packaging Technology (ICEPT). IEEE, 2016. http://dx.doi.org/10.1109/icept.2016.7583252.

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Avetisyan, A. A., and A. P. Djotyan. "Impurity states in gated graphene systems in a magnetic field." In International Conference on Microwave & THz Technologies, Wireless Communications and OptoElectronics (IRPhE 2022). Institution of Engineering and Technology, 2022. http://dx.doi.org/10.1049/icp.2022.2794.

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Roy, Bijoy, Dipakkumar A. Khatri, Pooja Mishra, and Digish K. Patel. "Role of carrier imbalance on electron-impurity scattering rate in double layer graphene system." In DAE SOLID STATE PHYSICS SYMPOSIUM 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0016691.

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Di Lecce, Valerio, Roberto Grassi, Antonio Gnudi, Elena Gnani, Susanna Reggiani, and Giorgio Baccarani. "Impact of crystallographic orientation and impurity scattering in Graphene-Base Heterojunction Transistors for Terahertz Operation." In ESSDERC 2014 - 44th European Solid State Device Research Conference. IEEE, 2014. http://dx.doi.org/10.1109/essderc.2014.6948823.

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Kryuchkov, Sergey V., and Constantine A. Popov. "Charge Entrainment by the Solitary Wave in the Graphene Superlattice: Free Carries and Impurity Ionization Cases." In 2018 IEEE 8th International Conference Nanomaterials: Application & Properties (NAP). IEEE, 2018. http://dx.doi.org/10.1109/nap.2018.8915304.

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Worley, Barrett C., Seohee Kim, Deji Akinwande, Peter J. Rossky, and Ananth Dodabalapur. "Mitigation of charged impurity effects in graphene field-effect transistors with polar organic molecules (Presentation Recording)." In SPIE Nanoscience + Engineering, edited by Manijeh Razeghi, Maziar Ghazinejad, Can Bayram, and Jae Su Yu. SPIE, 2015. http://dx.doi.org/10.1117/12.2189084.

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Rout, G. C., Sivabrata Sahu, and S. K. Panda. "Effect of impurity doping on tunneling conductance in AB-stacked bi-layer graphene: A tight-binding study." In 5TH NATIONAL CONFERENCE ON THERMOPHYSICAL PROPERTIES: (NCTP‐09). American Institute of Physics, 2016. http://dx.doi.org/10.1063/1.4945245.

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Robles Hernandez, Francisco C., and Goran Majkic. "Multi-Functional Fullerene Soot/Alumina Composites." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89865.

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Here are presented the results of characterization and mechanical testing of composites consisting of alumina matrix reinforced with fullerene soot. The composites were manufactured by mechanical milling, sonication, and spark plasma sintering. Small amounts of Ni and Ti were added as catalyst to in situ synthesize complex carbon structures during thermomechanical processing. Some of the carbon in the soot showed phase transformations to diamond, fullerite, graphene-like particles, etc. that act as effective reinforcement. This resulted in significant improvements in fracture toughness in full
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