High-Tc spin superfluidity in antiferromagnets

We report the observation of the unusual behavior of induction decay signals in antiferromagnetic monocrystals with Suhl-Nakamura interactions. The signals show the formation of the Bose-Einstein condensation (BEC) of magnons and the existence of spin supercurrent, in complete analogy with the spin...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2012-04, Vol.108 (17), p.177002-177002
Main Authors: Bunkov, Yu M, Alakshin, E M, Gazizulin, R R, Klochkov, A V, Kuzmin, V V, L'vov, V S, Tagirov, M S
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
Quantum Gases
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report the observation of the unusual behavior of induction decay signals in antiferromagnetic monocrystals with Suhl-Nakamura interactions. The signals show the formation of the Bose-Einstein condensation (BEC) of magnons and the existence of spin supercurrent, in complete analogy with the spin superfluidity in the superfluid (3)He and the atomic BEC of quantum gases. In the experiments described here, the temperature of the magnon BEC is a thousand times larger than in the superfluid (3)He. It opens a possibility to apply the spin supercurrent for various magnetic spintronics applications.
ISSN:0031-9007
1079-7114
DOI:10.1103/PHYSREVLETT.108.177002