Magnetic-field-induced insulating behavior in highly oriented pyrolitic graphite

被引：250

作者：

Khveshchenko, DV ^{[1
]}

机构：

[1] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 20期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.87.206401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose an explanation for the apparent semimetal-insulator transition observed in highly oriented pyrolitic graphite in the presence of magnetic field perpendicular to the layers. We show that the magnetic field opens an excitonic gap in the linear spectrum of the Coulomb interacting quasiparticles, in close analogy with the phenomenon of dynamical chiral symmetry breaking in the relativistic theories of the (2 + 1)-dimensional Dirac fermions. Our strong-coupling approach allows for a nonperturbative description of the corresponding critical behavior.

引用

页码：206401 / 1

页数：4

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