Spontaneous Quantum Hall States in Chirally Stacked Few-Layer Graphene Systems

被引：410

作者：

Zhang, Fan ^{[1
]}

Jung, Jeil ^{[1
]}

Fiete, Gregory A. ^{[1
]}

Niu, Qian ^{[1
,2
]}

MacDonald, Allan H. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[2] Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 15期

关键词：

SUSPENDED BILAYER GRAPHENE; BROKEN-SYMMETRY STATES; ELECTRONIC-PROPERTIES; RESISTANCE;

D O I：

10.1103/PhysRevLett.106.156801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Chirally stacked N-layer graphene systems with N >= 2 exhibit a variety of distinct broken symmetry states in which charge density contributions from different spins and valleys are spontaneously transferred between layers. We explain how these states are distinguished by their charge, spin, and valley Hall conductivities, by their orbital magnetizations, and by their edge state properties. We argue that valley Hall states have [N/2] edge channels per spin valley.

引用

页数：4

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