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We present a physics-based circuit-compatible model for pH-sensitive field-effect transistors based on two-dimensional (2D) materials. The electrostatics along the electrolyte-gated 2D-semiconductor stack is treated by solving the Poisson…

We calculate the conductivity of arbitrarily stacked multilayer graphene sheets within a relaxation time approximation, considering both short-range and long-range impurities. We theoretically investigate the feasibility of identifying the…

介观与纳米尺度物理 · 物理学 2011-05-20 Hongki Min , Parakh Jain , S. Adam , M. D. Stiles

The quantum transport properties of graphene and monolayer $MoS_2$ superconductor heterostructures has been of considerable importance in the recent few years. Layered nature of molybdenum disulfide permits the superconducting correlation…

介观与纳米尺度物理 · 物理学 2016-03-23 Maryam Khezerlou , Hadi Goudarzi

We study the tunneling behavior of Dirac fermions in graphene subjected to a double barrier potential profile created by spatially overlapping laser fields. By modulating the graphene sheet with an oscillating structure formed from two…

介观与纳米尺度物理 · 物理学 2024-05-28 Rachid El Aitouni , Miloud Mekkaoui , Ahmed Jellal

We performed density functional theory (DFT) calculations for a bi-layered heterostructure combining a graphene layer with a MoS2 layer with and without intercalated Li atoms. Our calculations demonstrate the importance of the van der Waals…

材料科学 · 物理学 2015-02-27 Towfiq Ahmed , N. A. Modine , Jian-Xin Zhu

The ability to transport energy is a fundamental property of the two-dimensional Dirac fermions in graphene. Electronic thermal transport in this system is relatively unexplored and is expected to show unique fundamental properties and to…

介观与纳米尺度物理 · 物理学 2013-08-13 K. C. Fong , Emma Wollman , Harish Ravi , Wei Chen , Aash Clerk , M. D. Shaw , H. G. LeDuc , K. C. Schwab

Transport of massless Dirac fermions in graphene monolayers is analyzed in the presence of a combination of singular magnetic barriers and applied electrostatic potential. Extending a recently proposed (J Phys. Cond. Matt. Vol 21, 292204…

介观与纳米尺度物理 · 物理学 2011-01-20 Manish Sharma , Sankalpa Ghosh

Hydrodynamic flow occurs in an electron liquid when the mean free path for electron-electron collisions is the shortest length scale in the problem. In this regime, transport is described by the Navier-Stokes equation, which contains two…

介观与纳米尺度物理 · 物理学 2016-03-08 Alessandro Principi , Giovanni Vignale , Matteo Carrega , Marco Polini

We present a first-principles study of the magnetotransport phenomena in p-doped diamond via the exact solution of the linearized Boltzmann transport equation, in which the materials' parameters, including electron-phonon and phonon-phonon…

材料科学 · 物理学 2018-11-21 Francesco Macheda , Nicola Bonini

A p-n junction, induced in graphene by gating, works to contrast the edge states of electrons and holes on each side of it. In a magnetic field those edge states carry two species of persistent current, which are intimately tied to the…

介观与纳米尺度物理 · 物理学 2024-11-05 K. Shizuya

We obtain the output characteristics of graphene field-effect transistors by using the charge-control model for the current, based on the solution of the Boltzmann equation in the field-dependent relaxation time approximation. Closed…

介观与纳米尺度物理 · 物理学 2010-07-22 Brett W. Scott , Jean-Pierre Leburton

Using the semi-classical Boltzmann theory, we calculate the conductivity as function of the carrier density. As usually, we include the scattering from charged impurities, but conclude that the estimated impurity density is too low in order…

介观与纳米尺度物理 · 物理学 2009-11-13 T. Stauber , N. M. R. Peres , F. Guinea

Thermoelectric power (TEP) is measured in bilayer graphene for various temperatures and charge-carrier densities. At low temperatures, measured TEP well follows the semiclassical Mott formula with a hyperbolic dispersion relation. TEP for a…

介观与纳米尺度物理 · 物理学 2010-12-14 Seung-Geol Nam , Dong-Keun Ki , Hu-Jong Lee

Recently, there has been great interest in the phenomenon of severe violation of the Wiedemann-Franz law in graphene Dirac fluids around 75 K, due to the strong coupling relativistic plasma near the neutral point, where traditional…

高能物理 - 理论 · 物理学 2024-02-12 C. E. Liu , S. G. Zhang

Optical reflectivity and transmission measurements over photon energies between 0.2 and 1.2 eV were performed on single-crystal graphene samples on a transparent SiO2 substrate. For photon energies above 0.5 eV, graphene yielded a…

材料科学 · 物理学 2009-11-13 Kin Fai Mak , Matthew Y. Sfeir , Yang Wu , Chun Hung Lui , James A. Misewich , Tony F. Heinz

Man-made artificial graphene has attracted significant attention in the past few years due to the possibilities to construct designer Dirac fermions with unexpected topological properties and applications in nanoelectronics. Here we use a…

材料科学 · 物理学 2014-12-10 Matti Ropo , Sami Paavilainen , Jaakko Akola , Esa Räsänen

Within the tight binding approximation, we study the dependence of the electronic band structure and of the optical conductivity of a graphene single layer on the modulus and direction of applied uniaxial strain. While the Dirac cone…

介观与纳米尺度物理 · 物理学 2010-01-15 F. M. D. Pellegrino , G. G. N. Angilella , R. Pucci

We develop a theory of drag in graphene double layers near charge neutrality. We work in the regime of electron hydrodynamics and account for interlayer correlations of charge puddle disorder. The drag resistivity is expressed in terms of…

介观与纳米尺度物理 · 物理学 2025-11-04 Dmitry Zverevich , Alex Levchenko , A. V. Andreev

We develop a theory for the energy relaxation of hot Dirac fermions in graphene. We obtain a generic expression for the energy relaxation rate due to electron-phonon interaction and calculate the power loss due to both optical and acoustic…

介观与纳米尺度物理 · 物理学 2015-05-13 Wang-Kong Tse , S. Das Sarma

We study the Goos-Hanchen like shifts for Dirac fermions in graphene scattered by double barrier structures. After obtaining the solution for the energy spectrum, we use the boundary conditions to explicitly determine the Goos-Hanchen like…

介观与纳米尺度物理 · 物理学 2015-06-16 Ahmed Jellal , Ilham Redouani , Youness Zahidi , Hocine Bahlouli