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

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.

References in corpus (1)

• Evidence for Crossed Andreev Reflections in bilayers of (100)YBCO and the itinerant ferromagnet SrRuO3

Cited by in corpus (2)

• Macroscopic Quantum Tunneling of a Topological Ferromagnet
• Monitoring superparamagnetic Langevin behavior of individual $\mathrm{SrRu}{\mathrm{O}}_3$ nanostructures