Slow Spin Relaxation in Two-Dimensional Electron Systems with Antidots

TL;DR

This study uses Monte Carlo simulations to explore how antidot lattices influence spin relaxation in 2D electron systems, revealing a method to enhance spin coherence for spintronics applications.

Contribution

It demonstrates that antidot lattices can significantly suppress spin relaxation through chaotic electron motion, offering a novel approach for spin coherence control.

Findings

Antidot lattices extend spin relaxation times.

Chaotic motion induced by antidots suppresses spin decoherence.

Potential for improved spintronic device performance.

Abstract

We report a Monte Carlo investigation of the effect of a lattice of antidots on spin relaxation in twodimensional electron systems. The spin relaxation time is calculated as a function of geometrical parameters describing the antidot lattice, namely, the antidot radius and the distance between their centers. It is shown that spin polarization relaxation can be efficiently suppressed by the chaotic spatial motion due to the antidot lattice. This phenomenon offers a new approach to spin coherence manipulation in spintronics devices.