• 文献标题:   Elastic spin-Hall effect in mechanical graphene
  • 文献类型:   Article
  • 作  者:   WANG YT, ZHANG S
  • 作者关键词:   spinorbit coupling, graphene, spin hall effect, mechanical vibration
  • 出版物名称:   NEW JOURNAL OF PHYSICS
  • ISSN:   1367-2630
  • 通讯作者地址:   Univ Birmingham
  • 被引频次:   4
  • DOI:   10.1088/1367-2630/18/11/113014
  • 出版年:   2016

▎ 摘  要

We show that spin-orbit interaction and elastic spin-Hall effect can exist in a classical mechanical system consisting of a two-dimensional honeycomb lattice of masses and springs. The band structure shows the presence of splitting at K point induced by the difference of longitudinal and transverse elastic constant, and this splitting can be regarded as an effective Dresselhaus-type spin-orbit coupling. Interestingly, as an initial displacement away from the equilibrium is applied, the time evolution simulation shows that waves of different spin polarization propagates along different directions at the Gamma and K point, which is characteristic of spin-Hall effect. Several cases for spin-Hall effect are also discussed.