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arXiv · 2012.08340

Dynamically stabilized spin superfluidity in frustrated magnets

Ricardo Zarzuela·Daniel Hill·Jairo Sinova·Yaroslav Tserkovnyak
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Abstract

We study the onset of spin superfluidity, namely coherent spin transport mediated by a topological spin texture, in frustrated exchange-dominated magnetic systems, engendered by an external magnetic field. We show that for typical device geometries used in nonlocal magnetotransport experiments, the magnetic field stabilizes a spin superflow against fluctuations, up to a critical current. For a given current, the critical field depends on the precessional frequency of the texture, which can be separately controlled. We contrast such dynamic stabilization of a spin superfluid to the conventional approaches based on topological stabilization.

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Ricardo Zarzuela, Daniel Hill, Jairo Sinova, Yaroslav Tserkovnyak. 2020-12-15. Dynamically stabilized spin superfluidity in frustrated magnets. https://doi.org/10.1103/physrevb.103.174424

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