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We use non-perturbative renormalization group techniques to calculate the momentum dependence of thermal fluctuations of graphene, based on a self-consistent calculation of the momentum dependent elastic constants of a tethered membrane. We…

软凝聚态物质 · 物理学 2010-07-13 F. L. Braghin , N. Hasselmann

We propose a method of measuring the electron temperature $T_e$ in mesoscopic conductors and demonstrate experimentally its applicability to micron-size graphene devices in the linear-response regime ($T_e\approx T$, the bath temperature).…

介观与纳米尺度物理 · 物理学 2009-04-29 K. Kechedzhi , D. W. Horsell , F. V. Tikhonenko , A. K. Savchenko , R. V. Gorbachev , I. V. Lerner , V. I. Fal'ko

The weak temperature dependence of the resistance R(T) of monolayer graphene1-3 indicates an extraordinarily high intrinsic mobility of the charge carriers. Important complications are the presence of mobile scattering centres that strongly…

材料科学 · 物理学 2010-01-18 Viera Skakalova , Alan B. Kaiser , Jai Seung Yoo , Dirk Obergfell , Siegmar Roth

We investigate the effect of strain and isotopic disorder on thermal transport in suspended graphene by equilibrium molecular dynamics simulations. We show that the thermal conductivity of unstrained graphene, calculated from the…

材料科学 · 物理学 2013-08-08 Luiz Felipe C. Pereira , Davide Donadio

We develop a theory of fluctuation-driven phenomena in thermal transport in graphene double-layers. We work in the regime of electron hydrodynamics and focus on the double charge neutrality point. Although at the neutrality point charge…

介观与纳米尺度物理 · 物理学 2022-09-20 Alex Levchenko , Songci Li , A. V. Andreev

We examine an intrinsic graphene connected to the phonon thermostat at temperature T under irradiation of thermal photons with temperature T_r, other than T. The distribution of nonequilibrium electron-hole pairs was obtained for the cases…

材料科学 · 物理学 2010-06-29 P. N. Romanets , F. T. Vasko , M. V. Strikha

We explore thermodynamics of a quantum membrane, with a particular application to suspended graphene membrane and with a particular focus on the thermal expansion coefficient. We show that an interplay between quantum and classical…

介观与纳米尺度物理 · 物理学 2016-11-30 I. S. Burmistrov , I. V. Gornyi , V. Yu. Kachorovskii , M. I. Katsnelson , A. D. Mirlin

We report on the temperature dependent electron transport in graphene at different carrier densities $n$. Employing an electrolytic gate, we demonstrate that $n$ can be adjusted up to 4$\times10^{14}$cm$^{-2}$ for both electrons and holes.…

介观与纳米尺度物理 · 物理学 2010-12-14 Dmitri K. Efetov , Philip Kim

Thermal ripples of graphene are well understood at room temperature, but their quantum counterparts at low temperatures are still in need of a realistic quantitative description. Here we present atomistic path-integral Monte Carlo…

材料科学 · 物理学 2018-04-18 Juraj Hasik , Erio Tosatti , Roman Martonak

Thermal fluctuations of single layer hydrogenated graphene (graphane) are investigated using large scale atomistic simulations. By analyzing the mean square value of the height fluctuations $<h^2>$ and the height-height correlation function…

材料科学 · 物理学 2015-06-05 S. Costamagna , M. Neek-Amal , J. H. Los , F. M. Peeters

We reveal a dramatic departure of electron thermodiffusion in solids relative to the commonly accepted picture of the ideal free-electron gas model. In particular, we show that the interaction with the lattice and impurities, combined with…

介观与纳米尺度物理 · 物理学 2020-10-28 Deng Pan , Hongxing Xu , F. Javier García de Abajo

The thermal conductivity (TC) of isolated graphene with different concentrations of isotopes (C13) is studied with equilibrium molecular dynamics method at 300K. In the limit of pure C12 or C13 graphene, TC of graphene in zigzag and…

材料科学 · 物理学 2010-07-12 Hengji Zhang , Geunsik Lee , Alexandre F. Fonseca , Tammie L. Borders , Kyeongjae Cho

We study thermal fluctuations of a free-standing bilayer graphene subject to vanishing external tension. Within a phenomenological theory, the system is described as a stack of two continuum crystalline membranes, characterized by finite…

介观与纳米尺度物理 · 物理学 2020-12-01 Achille Mauri , David Soriano , Mikhail I. Katsnelson

We investigate decoherence of an electron in graphene caused by electron-flexural phonon interaction. We find out that flexural phonons can produce dephasing rate comparable to the electron-electron one. The problem appears to be quite…

介观与纳米尺度物理 · 物理学 2015-05-20 Konstantin S. Tikhonov , Wei L. Z. Zhao , Alexander M. Finkel'stein

Magnetism typically arises from the effect of exchange interactions on highly localized fermionic wave functions in f- and d-atomic orbitals. In rhombohedral multilayer graphene (RMG), in contrast, magnetism-manifesting as spontaneous…

Thermal properties of graphene display peculiar characteristics associated to the two-dimensional nature of this crystalline membrane. These properties can be changed and tuned in the presence of applied stresses, both tensile and…

材料科学 · 物理学 2018-06-07 Carlos P. Herrero , Rafael Ramirez

We study the effect of the electron-phonon interaction on the finite frequency dependent electronic thermal conductivity of two dimensional graphene. We calculate it for various acoustic phonons present in graphene and characterized by…

强关联电子 · 物理学 2017-04-07 Pankaj Bhalla

Motivated by recent experiments [1-3] we calculate the thermopower of graphene incorporating the energy dependence of various transport scattering times. We find that scattering by screened charged impurities gives a reasonable explanation…

介观与纳米尺度物理 · 物理学 2009-12-29 E. H. Hwang , E. Rossi , S. Das Sarma

We theoretically study the transport properties of both monolayer and bilayer graphene in the presence of electron-hole puddles induced by charged impurities which are invariably present in the graphene environment. We calculate the…

介观与纳米尺度物理 · 物理学 2011-09-28 Qiuzi Li , E. H. Hwang , S. Das Sarma

It is usually assumed that tunneling current is fairly independent of temperature. By performing an atomistic transport simulation, we show, to the contrary, that the subthreshold tunneling current in a graphene nanoribbon (GNR)…

介观与纳米尺度物理 · 物理学 2009-10-01 Youngki Yoon , Sayeef Salahuddin
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