Optically tunable spin transport on the surface of a topological insulator

D. Yudin, O. V. Kibis, I. A. Shelykh

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The emerging field of spinoptronics has a potential to supersede the functionality of modern electronics, while a proper description of strong light-matter coupling pose the most intriguing questions from both fundamental scientific and technological perspectives. In this paper we address a highly relevant issue for such a development. We theoretically explore spin dynamics on the surface of a 3D topological insulator (TI) irradiated with an off-resonant high-frequency electromagnetic wave. The strong coupling between electrons and the electromagnetic wave drastically modifies the spin properties of TI. The effects of irradiation are shown to result in anisotropy of electron energy spectrum near the Dirac point and suppression of spin current and are investigated in detail in this work.

Original languageEnglish
Article number103014
JournalNew Journal of Physics
Volume18
Issue number10
DOIs
Publication statusPublished - Oct 2016
Externally publishedYes

Keywords

  • spin-charge dynamics
  • strong light-matter coupling
  • topological insulator

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