Thermally assisted current-induced magnetization reversal in SrRuO3

TL;DR

This study demonstrates that in SrRuO3, current-induced magnetization reversal is significantly aided by thermal fluctuations, with the reversal time depending exponentially on temperature and current amplitude, highlighting a thermally assisted switching mechanism.

Contribution

The paper reveals the exponential dependence of magnetization reversal time on temperature and current, providing new insights into thermally assisted current-induced switching in SrRuO3.

Findings

Reversal time depends exponentially on 1/T

Reversal time depends exponentially on current amplitude

Magnetization reversal is assisted by thermal fluctuations

Abstract

We inject a sequence of 1 ms current pulses into uniformly magnetized patterns of the itinerant ferromagnet SrRuO3 until a magnetization reversal is detected. We detect the effective temperature during the pulse and find that the cumulative pulse time required to induce magnetization reversal depends exponentially on 1/T. In addition, we find that the cumulative pulse time also depends exponentially on the current amplitude. These observations indicate current-induced magnetization reversal assisted by thermal fluctuations.