Optically tunable spin transport on the surface of a topological insulator

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.

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Cited by in corpus (13)

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• Optically induced Lifshitz transition in bilayer graphene
• Dynamical Floquet spectrum of Kekulé-distorted graphene under normal incidence of electromagnetic radiation
• Exploring the Optical States for Black Phosphorus: Anisotropy and Bandgap Tuning
• Light-induced anisotropic skyrmion and stripe phases in a Rashba ferromagnet
• Optically induced topological states on the surface of mercury telluride
• Floquet engineering of the Luttinger Hamiltonian
• Impact of high-frequency pumping on anomalous finite-size effects in three-dimensional topological insulators
• Floquet engineering of Dirac cones on the surface of a topological insulator
• Structure of surface electronic states in strained mercury telluride
• Andreev tunnelling and Josephson current in light irradiated graphene
• Inducing anisotropies in Dirac fermions by periodic driving
• Dynamical stabilization by vacuum fluctuations in a cavity: Resonant electron scattering in the ultrastrong light-matter coupling regime