Manipulating the spin texture in spin-orbit superlattice by terahertz radiation

TL;DR

This paper demonstrates how terahertz radiation can manipulate the spin texture in a Rashba spin-orbit superlattice, enabling control over spin density distribution through radiation intensity tuning.

Contribution

It introduces a method to control spin textures in superlattices using terahertz radiation, revealing a new way to couple spins and photons with different polarizations.

Findings

Spin density can be flipped by tuning radiation intensity.

Terahertz radiation enables control of spin textures.

Coupling of spins and photons is tunable via radiation polarization.

Abstract

The spin texture in a gate-controlled superlattice with Rashba spin-orbit coupling is studied in the presence of external terahertz radiation causing the superlattice miniband transitions. It is shown that the local distribution of spin density can be flipped by tuning the radiation intensity, allowing the controlled coupling of spins and photons with different polarizations.