Monte Carlo simulations of ferromagnetism in p-CdMnTe quantum wells

TL;DR

This paper uses Monte Carlo simulations to explore how various interactions and fluctuations influence ferromagnetism in p-CdMnTe quantum wells, explaining experimental observations.

Contribution

It introduces a detailed Monte Carlo simulation approach that accounts for multiple complex interactions affecting ferromagnetism in two-dimensional quantum wells.

Findings

Critical temperature and hysteresis are influenced by antiferromagnetic interactions.

Simulation results explain experimental behaviors in p-CdMnTe quantum wells.

Magnetization fluctuations and disorder significantly impact ferromagnetic properties.

Abstract

Monte Carlo simulations, in which the Schrodinger equation is solved at each Monte Carlo sweep, are employed to assess the influence of magnetization fluctuations,short-range antiferromagnetic interactions, disorder, magnetic polaron formation, and spin-Peierls instability on the carrier-mediated Ising ferromagnetism in two-dimensional electronic systems. The determined critical temperature and hysteresis are affected in a nontrivial way by the antiferromagnetic interactions. The findings explain striking experimental results for modulation-doped p-CdMnTe quantum wells.