Quantum capacitance and Landau parameters of massless Dirac fermions in graphene

被引：11

作者：

Asgari, Reza ^{[1
]}

Katsnelson, Mikhail I. ^{[2
]}

Polini, Marco ^{[3
,4
]}

机构：

[1] Inst Res Fundamental Sci IPM, Sch Phys, Tehran 193955531, Iran

[2] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands

[3] CNR, Ist Nanosci, NEST, I-56126 Pisa, Italy

[4] Scuola Normale Super Pisa, I-56126 Pisa, Italy

来源：

ANNALEN DER PHYSIK | 2014年 / 526卷 / 9-10期

关键词：

Graphene; Electron-electron interactions; Quantum capacitance; Fermi liquid properties; 2-DIMENSIONAL ELECTRON; BILAYER GRAPHENE; LIQUID; RENORMALIZATION; COMPRESSIBILITY;

D O I：

10.1002/andp.201400167

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Extensive numerical results for the thermodynamic density of states (i.e.quantum capacitance) of a two-dimensional massless Dirac fermion fluid in a doped graphene sheet are presented. In particular, by employing the random phase approximation, the impact of screening exerted by a metal gate located nearby a graphene flake is quantified. Finally, the spin- and circularly-symmetric Landau parameter, which can be experimentally extracted from independent measurements on the same setup of the quantum capacitance and quasiparticle velocity, is calculated.

引用

页码：359 / 365

页数：7

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