THE QUANTUM HALL EFFECT IN GRAPHENE

被引：7
|
作者：
Cea, Paolo [1 ,2 ]
机构：
[1] Univ Bari, Dipartmento Fis, Via Amendola 173, I-70126 Bari, Italy
[2] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
来源：
MODERN PHYSICS LETTERS B | 2012年 / 26卷 / 13期
关键词：
Quantum Hall effect; graphene; planar QED; SYMMETRY-BREAKING; BERRYS PHASE; CARBON;
D O I：
10.1142/S0217984912500844
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate the quantum Hall effect in graphene. We argue that in graphene in presence of an external magnetic field there is dynamical generation of mass by a rearrangement of the Dirac sea. We show that the mechanism breaks the lattice valley degeneracy only for the n = 0 Landau levels and leads to the new observed nu = +/- 1 quantum Hall plateaus. We suggest that our result can be tested by means of numerical simulations of planar Quantum Electro Dynamics with dynamical fermions in an external magnetic fields on the lattice.
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收藏
页数：7
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