10.57647/J.JTAP.2023.1703.31

On optical field driven quantum spin Hall phase in Bi_2Se_3 thin film with magnetic Impurities

PDF HTML
  • Udai Prakash Tyagi*1,
  • Partha Sarathi Goswami1,
  1. Deshbandhu College, University of Delhi, Kalkaji, New Delhi-110019, India
Cover Image

Published in Issue 2023-11-17

How to Cite

1.
Tyagi UP, Goswami PS. On optical field driven quantum spin Hall phase in Bi_2Se_3 thin film with magnetic Impurities. J Theor Appl phys. 2023 Nov. 17;17(3). Available from: https://oiccpress.com/jtap/article/view/1981
Crossref
Scopus
Google Scholar
Europe PMC

PDF views: 163

HTML views: 10

Abstract

The normal incidence of circularly polarized optical field (POF) of tunable intensity on the topological insulator Bi2Se3 film is shown to give rise to the quantum spin Hall (QSH) effect, in the presence of the magnetic impurities (MI), starting with a low-energy two-dimensional, time-dependent Hamiltonian in the framework of the Floquet theory. The quantized topological number- the KaneâMele index Z2 for QSH phase- strongly support this topological state.

Keywords

  • Circularly polarized optical field,
  • Floquet theory,
  • Kane– Mele index Z2,
  • Magnetic impurities,
  • Quantum spin Hall phase
PDF HTML