• 文献标题:   Spontaneous Quantum Hall States in Chirally Stacked Few-Layer Graphene Systems
  • 文献类型:   Article
  • 作  者:   ZHANG F, JUNG J, FIETE GA, NIU QA, MACDONALD AH
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007
  • 通讯作者地址:   Univ Texas Austin
  • 被引频次:   248
  • DOI:   10.1103/PhysRevLett.106.156801
  • 出版年:   2011

▎ 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.