Spin-polarized tunable photocurrents

Abstract

Harnessing the unique features of topological materials for the development of a new generation of topological based devices is a challenge of paramount importance. Using Floquet scattering theory combined with atomistic models we study the interplay between laser illumination, spin and topology in a two-dimensional material with spin-orbit coupling. Starting from a topological phase, we show how laser illumination can selectively disrupt the topological edge states depending on their spin. This is manifested by the generation of pure spin currents and spin-polarized charge photocurrents under linearly and circularly polarized laser-illumination, respectively. Our results open a path for the generation and control of spin-polarized photocurrents.

arXiv comment7 pages, 4 figures

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Cited by in corpus (10)

• Light-induced phase crossovers in a quantum spin Hall system
• Floquet engineering of topological phase transitions in quantum spin Hall $\alpha$-$T_3$ system
• Quantum Hall edge states under periodic driving: a Floquet induced chirality switch
• Semiclassical dynamics of electrons in space-time crystal: Magnetization, polarization, and current response
• Excitation wavelength-dependent ultrafast THz emission from surface and bulk of three-dimensional topological insulators
• Photocurrents of charge and spin in single-layer Fe${}_3$GeTe${}_2$
• Loss-induced universal one-way transport in periodically driven systems
• Photoinduced dc Hall current in few-layer black phosphorus with a gate-tunable Floquet gap
• Engineering Floquet moiré patterns for scalable photocurrents
• Dynamical Spin-Orbit-Based Spin Transistor