High-Tc Spin Superfluidity in Antiferromagnets

被引：54

作者：

Bunkov, Yu. M. ^{[1
]}

Alakshin, E. M. ^{[2
]}

Gazizulin, R. R. ^{[2
]}

Klochkov, A. V. ^{[2
]}

Kuzmin, V. V. ^{[2
]}

L'vov, V. S. ^{[3
]}

Tagirov, M. S. ^{[2
]}

机构：

[1] CNRS, Inst Neel, F-30842 Grenoble, France

[2] Kazan Fed Univ, Kazan 420008, Russia

[3] Weizmann Inst Sci, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 17期

基金：

欧盟第七框架计划;

关键词：

BOSE-EINSTEIN CONDENSATION; LIVED INDUCTION SIGNAL; HE-3; MAGNONS;

D O I：

10.1103/PhysRevLett.108.177002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 He-3 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 He-3. It opens a possibility to apply the spin supercurrent for various magnetic spintronics applications.

引用

页数：5

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