• 文献标题:   Wigner crystal phases in bilayer graphene
  • 文献类型:   Article
  • 作  者:   SILVESTROV PG, RECHER P
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   TU Braunschweig
  • 被引频次:   3
  • DOI:   10.1103/PhysRevB.95.075438
  • 出版年:   2017

▎ 摘  要

It is generally believed that a Wigner crystal in single layer graphene cannot form because the magnitudes of the Coulomb interaction and the kinetic energy scale similarly with decreasing electron density. However, this scaling argument does not hold for the low energy states in bilayer graphene. We consider the formation of a Wigner crystal in weakly doped bilayer graphene with an energy gap opened by a perpendicular electric field. We argue that in this system the formation of the Wigner crystal is not only possible, but different phases of the crystal with very peculiar properties may exist here depending on the system parameters.