Intense terahertz laser fields on a quantum dot with Rashba spin-orbit coupling

TL;DR

This paper explores how intense terahertz laser fields and Rashba spin-orbit coupling influence the electron spin and magnetic properties in a quantum dot, revealing tunable magnetic moments and state modifications.

Contribution

It demonstrates the combined effects of terahertz laser fields and spin-orbit coupling on electron spin dynamics and magnetic moment control in quantum dots, a novel investigation.

Findings

Laser fields and spin-orbit coupling significantly alter electron density of states.

Magnetic moment direction depends on system symmetries.

Magnetic moment amplitude can be tuned by laser parameters and spin-orbit strength.

Abstract

We investigate the effects of the intense terahertz laser field and the spin-orbit coupling on single electron spin in a quantum dot. The laser field and the spin-orbit coupling can strongly affect the electron density of states and can excite a magnetic moment. The direction of the magnetic moment depends on the symmetries of the system, and its amplitude can be tuned by the strength and frequency of the laser field as well as the spin-orbit coupling.