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The electrons in graphene for energies close to the Dirac point have been found to form strongly interacting fluid. Taking this fact into account we have extended previous work on the transport properties of graphene by taking into account…

高能物理 - 理论 · 物理学 2018-03-14 Marek Rogatko , Karol. I. Wysokinski

We theoretically consider, comparing with the existing experimental literature, the electrical conductivity of gated monolayer graphene as a function of carrier density, temperature, and disorder in order to assess the prospects of…

介观与纳米尺度物理 · 物理学 2013-01-28 S. Das Sarma , E. H. Hwang

Based on the recently developed picture of an electronic ideal relativistic fluid at the Dirac point, we present an analytical model for the conductivity in graphene that is able to describe the linear dependence on the carrier density and…

介观与纳米尺度物理 · 物理学 2013-01-16 M. Mendoza , H. J. Herrmann , S. Succi

Conductivity of a disorder-free intrinsic graphene is studied to the first order in the long-range Coulomb interaction and is found to be \sigma=\sigma_0(1+0.01 g), where 'g' is the dimensionless ("fine structure") coupling constant. The…

介观与纳米尺度物理 · 物理学 2009-02-25 E. G. Mishchenko

The dynamical approach is applied to ballistic transport in mesoscopic graphene samples of length L and contact potential U. At times shorter than both relevant time scales, the flight time and \hslash/U, the major effect of the electric…

介观与纳米尺度物理 · 物理学 2015-05-28 M. Lewkowicz , B. Rosenstein , D. Nghiem

We investigate the conductivity of doped graphene in the semiclassical Boltzmann limit, as well as the conductivity minimum within the self-consistent transport theory. Using the hard-disk model for a two-dimensional distribution of…

材料科学 · 物理学 2013-11-21 Rastko Aničić , Zoran L. Mišković

We develop an Effective Medium Theory to study the electrical transport properties of disordered graphene. The theory includes non-linear screening and exchange-correlation effects allowing us to consider experimentally relevant strengths…

介观与纳米尺度物理 · 物理学 2009-06-20 Enrico Rossi , S. Adam , S. Das Sarma

Graphene -a recently discovered one-atom-thick layer of graphite- constitutes a new model system in condensed matter physics, because it is the first material in which charge carriers behave as massless chiral relativistic particles. The…

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

The minimum conductivity value as well as the linear dependence of conductivity on the charge density near the Dirac point in single and doublelayer graphene is derived from the energy-time uncertainty principle applied to ballistic charge…

介观与纳米尺度物理 · 物理学 2015-05-13 D. Dragoman

We theoretically revisit graphene transport properties as a function of carrier density, taking into account possible correlations in the spatial distribution of the Coulomb impurity disorder in the environment. We find that the charged…

介观与纳米尺度物理 · 物理学 2011-10-06 Qiuzi Li , E. H. Hwang , E. Rossi , S. Das Sarma

Disordered Fermi-Dirac distributions are used to model, within a straightforward and essentially phenomenological Boltzmann equation approach, the electron/hole transport across graphene puddles. We establish, with striking experimental…

介观与纳米尺度物理 · 物理学 2015-05-30 L. Moriconi , D. Niemeyer

We model disorder in graphene by random impurities treated in a coherent-potential approximation. Using the analytically solvable Lloyd model for the disorder distribution, we show that the temperature dependence of the minimum conductivity…

介观与纳米尺度物理 · 物理学 2012-03-13 Michael Sentef , Marcus Kollar , Arno P. Kampf

The conductance of ballistic graphene at the neutrality point is due to coherent electron tunneling between the leads, the so called pseudodiffusive regime. The conductance scales as function of the sample dimensions in the same way as in a…

介观与纳米尺度物理 · 物理学 2014-09-17 F. Guinea , M. I. Katsnelson

The complete theory of electrical conductivity of graphene at arbitrary temperature is developed with taken into account mass-gap parameter and chemical potential. Both the in-plane and out-of-plane conductivities of graphene are expressed…

介观与纳米尺度物理 · 物理学 2017-12-25 G. L. Klimchitskaya , V. M. Mostepanenko , V. M. Petrov

We obtain analytic expressions for the conductivity of pristine (pure) graphene in the framework of the Dirac model using the polarization tensor in (2+1)-dimensions defined along the real frequency axis. It is found that at both zero and…

材料科学 · 物理学 2016-07-13 G. L. Klimchitskaya , V. M. Mostepanenko

Conductance of zigzag interfaces between graphene sheet and normal metal is investigated in the tight-binding approximation. Boundary conditions, valid for a variety of scattering problems, are constructed and applied to the normal metal --…

介观与纳米尺度物理 · 物理学 2009-11-11 Ya. M. Blanter , Ivar Martin

The problem of electrostatic screening of a charged line by undoped or weakly doped graphene is treated beyond the linear-response theory. The induced electron density is found to be approximately doping independent, n(x)~(log x)^2/x^2, at…

介观与纳米尺度物理 · 物理学 2015-06-24 Bor-Yuan Jiang , Michael M. Fogler

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

The interband and intraband conductivities of doped graphene were theoretically investigated beyond the linear response. The new dependences of induced currents on frequency and amplitude of external electric field, the graphene temperature…

介观与纳米尺度物理 · 物理学 2013-08-19 B. M. Ruvinskii , M. A. Ruvinskii
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