• 文献标题:   Transient Zitterbewegung of graphene superlattices
  • 文献类型:   Article
  • 作  者:   WANG Q, SHEN R, SHENG L, WANG BG, XING DY
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW A
  • ISSN:   1050-2947 EI 1094-1622
  • 通讯作者地址:   Nanjing Univ
  • 被引频次:   5
  • DOI:   10.1103/PhysRevA.89.022121
  • 出版年:   2014

▎ 摘  要

We investigate Zitterbewegung (ZB) behavior in a graphene superlattice with generations of massless Dirac fermions having highly anisotropic group velocities, which results from a graphene subject to one-dimensional periodic potentials. It is shown that with tuning parameters of the periodic potential, the frequency of ZB oscillations can be of order 10(12) Hz, the amplitude can increase to hundreds of angstroms, and their attenuation can become much slower. The required parameters of the graphene superlattice can be realized under current experimental conditions, thus providing a good system for probing the ZB effect experimentally.