Thermally assisted domain walls quantum tunneling at the high temperature range

TL;DR

This paper presents a theoretical and numerical study of thermally assisted quantum tunneling of domain walls in ferromagnets, accounting for interactions and thermal excitations, with a new numerical method for probability calculations across wide temperature ranges.

Contribution

It introduces a novel numerical approach to calculate thermally stimulated quantum depinning probabilities of domain walls over a broad temperature spectrum.

Findings

Quantum tunneling probability increases with temperature.

Interactions and thermal excitations significantly influence domain wall depinning.

The method enables accurate predictions of depinning behavior at high temperatures.

Abstract

A theoretical and numerical investigations of the quantum tunneling of the domain walls in ferromagnets and weak ferromagnets was performed taking into account the interaction between walls and thermal excitations of a crystal. The numerical method for calculations of the probability of a thermally stimulated quantum depinning as the function of temperature at the wide temperature range has been evolved.