Coherent dynamics of localized spins coupled with a two-dimensional hole gas in diluted-magnetic quantum wells

TL;DR

This paper theoretically investigates how localized spins in a diluted-magnetic quantum well interact with a two-dimensional hole gas, revealing effects on spin dynamics and Larmor frequency in magnetic fields.

Contribution

It introduces a model describing the influence of a 2D hole gas on localized spin dynamics in diluted-magnetic quantum wells, highlighting the impact of exchange interactions.

Findings

Larmor frequency of localized spins is reduced by the hole gas influence

Exchange interaction affects the spin system's time evolution

Oscillating effective fields modify spin dynamics

Abstract

Spin dynamics in a quantum well made of diluted-magnetic semiconductor is studied theoretically. The exchange interaction of the ensemble of localized spins with two-dimensional heavy-hole gas is shown to affect time evolution of the spin system in an in-plane magnetic field. The Larmor frequency of localized spins is reduced under influence of an oscillating effective field of holes.