Magnon Supercurrent and the Phase Slippage in an Yttrium Iron Garnet Film

被引：0

作者：

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

Belotelov, V. I. ^{[1
,2
,3
]}

Vetoshko, P. M. ^{[1
,3
,4
]}

Knyazev, G. A. ^{[1
,2
]}

Kuzmichev, A. N. ^{[1
]}

Petrov, P. E. ^{[1
,2
]}

机构：

[1] Russian Quantum Ctr, Skolkovo 121205, Moscow, Russia

[2] Moscow MV Lomonosov State Univ, Moscow 119992, Russia

[3] Vernadsky Crimean Fed Univ, Simferopol 295007, Russia

[4] Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Moscow 125009, Russia

来源：

JETP LETTERS | 2024年 / 120卷 / 06期

基金：

俄罗斯科学基金会;

关键词：

BOSE-EINSTEIN CONDENSATION; LIVED INDUCTION SIGNAL; SPIN-CURRENT; FERROMAGNETIC-RESONANCE; SUPERFLUIDITY; EXCITATION; BEC; PRECESSION; TRANSITION; FEATURES;

D O I：

10.1134/S0021364024603117

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Exactly forty years ago, the spin superfluidity and Bose-Einstein condensation of magnons in superfluid antiferromagnetic 3He-B were discovered. In this work, the existence of spin superfluidity and phase slippage in an yttrium iron garnet film at room temperature is demonstrated using the optical Faraday effect. The s-patial distribution of the phase and amplitude of the spin precession under the conditions of magnon Bose-Einstein condensation are studied by varying the pump phase difference between two strip lines exciting magnons.

引用

页码：421 / 427

页数：7

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