Quantum capacitance and compressibility of graphene: The role of Coulomb interactions

被引：13

作者：

Lozovik, Yu. E. ^{[1
,2
,3
,4
]}

Sokolik, A. A. ^{[1
,2
]}

Zabolotskiy, A. D. ^{[1
,3
]}

机构：

[1] Russian Acad Sci, Inst Spect, Moscow 142190, Russia

[2] Natl Res Univ HSE, MIEM, Moscow 109028, Russia

[3] All Russia Res Inst Automat, Moscow 127055, Russia

[4] Nat Res Nucl Univ MEPHI, Moscow 115409, Russia

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 07期

关键词：

ELECTRON-ELECTRON INTERACTIONS; BILAYER GRAPHENE; FERMI-LIQUID; TRANSISTOR; MONOLAYER; DEVICES; SYSTEM;

D O I：

10.1103/PhysRevB.91.075416

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Many-body effects on quantum capacitance, compressibility, renormalized Fermi velocity, and kinetic and interaction energies of massless Dirac electrons in graphene, induced by Coulomb interactions, are analyzed theoretically in the first-order, Hartree-Fock, and random-phase approximations. Recent experimental data on quantum capacitance and renormalized Fermi velocity are analyzed and compared with the theory. The bare Fermi velocity and the effective dielectric constants are obtained from the experimental data. A combined effect of Coulomb interactions and Gaussian fluctuations of the disorder potential is considered.

引用

页数：8

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