Observation of spin superfluidity: YIG magnetic films and beyond

Edouard Sonin*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

From topology of the order parameter of the magnon condensate observed in yttrium-iron-garnet (YIG) magnetic films one must not expect energetic barriers making spin supercurrents metastable. But we show that some barriers of dynamical origin are possible nevertheless until the gradient of the phase (angle of spin precession) does not exceed the critical value (analog of the Landau critical velocity in superfluids). On the other hand, recently published claims of experimental detection of spin superfluidity in YIG films and antiferromagnets are not justified, and spin superfluidity in magnetically ordered solids has not yet been experimentally confirmed.

Original languageEnglish
Article number012116
JournalJournal of Physics: Conference Series
Volume969
Issue number1
DOIs
StatePublished - 19 Apr 2018
Event28th International Conference on Low Temperature Physics, LT 2018 - Gothenburg, Sweden
Duration: 9 Aug 201716 Aug 2017

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

Fingerprint

Dive into the research topics of 'Observation of spin superfluidity: YIG magnetic films and beyond'. Together they form a unique fingerprint.

Cite this