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arXiv · 1211.0965

Indication for macroscopic quantum tunneling below 10 K in nanostructures of SrRuO3

Omer Sinwani·James W. Reiner·Lior Klein
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Abstract

We study magnetization reversal of nanostructures of the itinerant ferromagnet SrRuO3 (Tc~150 K). We find that down to 10 K the magnetization reversal is dominated by thermal activation. From 2 - 10 K, the magnetization reversal becomes independent of temperature, raising the possibility for reversal dominated by macroscopic quantum tunneling (MQT). A 10 K crossover to MQT is consistent with the extremely large anisotropy field (~7 T) of SrRuO3.

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Omer Sinwani, James W. Reiner, Lior Klein. 2012-11-05. Indication for macroscopic quantum tunneling below 10 K in nanostructures of SrRuO3. https://doi.org/10.1103/physrevb.86.100403

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