• 文献标题:   The modulation of the de Haas-van Alphen effect in graphene by electric field
  • 文献类型:   Article
  • 作  者:   ZHANG SL, MA N, ZHANG EH
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF PHYSICSCONDENSED MATTER
  • ISSN:   0953-8984
  • 通讯作者地址:   Xi An Jiao Tong Univ
  • 被引频次:   24
  • DOI:   10.1088/0953-8984/22/11/115302
  • 出版年:   2010

▎ 摘  要

This paper explores the de Haas-van Alphen effect (dHvA) of graphene in the presence of an in-plane uniform electric field. Three major findings are yielded. First of all, the electric field is found to modulate the de Haas-van Alphen magnetization and magnetic susceptibility through the dimensionless parameter (beta = nu(E)(FB)). As the parameter beta increases, the values of magnetization and magnetic susceptibility increase to positive infinity or decrease to negative infinity at the exotic point beta(c) = 1. Furthermore, the dHvA oscillation amplitude rises abruptly to infinity for zero temperature at beta(c) = 1, but eventually collapses at a finite temperature, thereby leading to the de Haas-van Alphen effect vanishing. In addition, the magnetic susceptibility depends on the electric and magnetic fields, suggesting that graphene should be a non-linear magnetic medium in the presence of an external field. These results, which are different from those obtained in the standard non-relativistic 2D electron gas, are attributed to the anomalous Landau level spectrum of graphene.