Normal electric field enhanced light-induced polarizations and magnetic detection of valley polarization in silicene.

ABSTRACT: The role of staggered potential on light-induced spin and pseudo-spin polarization has been investigated in silicene. It has been shown that non-equilibrium spin and pseudo-spin polarizations are emerged in silicene sheet by applying an external perpendicular electric field in the presence of circularly polarized light emission. This electric field results in pseudo-spin resolved states very close to the Dirac points therefore could be considered as a pseudomagnetic field. It has been shown that staggered potential induced spin-valley locking and pseudo-spin resolved bands are responsible for the enhancement of the spin and pseudo-spin polarizations. Meanwhile, spin-valley locking suggests a coexistence of both spin and valley polarizations with nearly identical (or at least proportional)

SUBMITTER: Shahabi N 

PROVIDER: S-EPMC7538594 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature