Lattice-induced double-valley degeneracy lifting in graphene by a magnetic field

被引：25

作者：

Luk' yanchuk, Igor A. ^{[1
,2
]}

Bratkovsky, Alexander M. ^{[3
]}

机构：

[1] Univ Picardie Jules Verne, Lab Condensed Matter Phys, F-80039 Amiens, France

[2] LD Landau Theoret Phys Inst, Moscow, Russia

[3] Hewlett Packard Labs, Palo Alto, CA 94304 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.100.176404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the recently discovered double-valley splitting of the Landau levels in the quantum Hall effect in graphene can be explained as the perturbative orbital interaction of intravalley and intervalley microscopic orbital currents with a magnetic field. This effect is facilitated by the translationally noninvariant terms that correspond to graphene's crystallographic honeycomb symmetry but do not exist in the relativistic theory of massless Dirac fermions in quantum electrodynamics. We discuss recent data in view of these findings.

引用

页数：4

共 32 条

[1] Spin-filtered edge states and quantum hall effect in graphene [J].

Abanin, DA ;

Lee, PA ;

Levitov, LS .

PHYSICAL REVIEW LETTERS, 2006, 96 (17)

[2] Randomness-induced XY ordering in a graphene quantum Hall ferromagnet [J].

Abanin, Dmitry A. ;

Lee, Patrick A. ;

Levitov, Leonid S. .

PHYSICAL REVIEW LETTERS, 2007, 98 (15)

[3] Dissipative quantum Hall effect in graphene near the Dirac point [J].

Abanin, Dmitry A. ;

Novoselov, Kostya S. ;

Zeitler, Uli ;

Lee, Patrick A. ;

Geim, A. K. ;

Levitov, L. S. .

PHYSICAL REVIEW LETTERS, 2007, 98 (19)

[4] Graphene integer quantum Hall effect in the ferromagnetic and paramagnetic regimes [J].

Alicea, Jason ;

Fisher, Matthew P. A. .

PHYSICAL REVIEW B, 2006, 74 (07)

[5] BLOCH ELECTRONS IN A MAGNETIC FIELD [J].

BLOUNT, EI .

PHYSICAL REVIEW, 1962, 126 (05) :1636-&

[6] Quasiparticle dynamics in graphene [J].

Bostwick, Aaron ;

Ohta, Taisuke ;

Seyller, Thomas ;

Horn, Karsten ;

Rotenberg, Eli .

NATURE PHYSICS, 2007, 3 (01) :36-40

[7] Edge and surface states in the quantum Hall effect in graphene [J].

Castro Neto, A. H. ;

Guinea, F. ;

Peres, N. M. R. .

PHYSICAL REVIEW B, 2006, 73 (20)

[8] Luttinger liquid at the edge of undoped graphene in a strong magnetic field [J].

Fertig, H. A. ;

Brey, L. .

PHYSICAL REVIEW LETTERS, 2006, 97 (11)

[9] Spontaneous parity breaking of graphene in the quantum Hall regime [J].

Fuchs, Jean-Noel ;

Lederer, Pascal .

PHYSICAL REVIEW LETTERS, 2007, 98 (01)

[10] Electron interactions in graphene in a strong magnetic field [J].

Goerbig, M. O. ;

Moessner, R. ;

Doucot, B. .

PHYSICAL REVIEW B, 2006, 74 (16)

← 1 2 3 4 →