Temperature dependence of the picosecond spin Seebeck effect

被引：13

作者：

Kholid, Farhan Nur ^{[1
,2
]}

Hamara, Dominik ^{[1
]}

Terschanski, Marc ^{[3
]}

Mertens, Fabian ^{[3
]}

Bossini, Davide ^{[4
,5
]}

Cinchetti, Mirko ^{[3
]}

McKenzie-Sell, Lauren ^{[1
,6
]}

Patchett, James ^{[1
]}

Petit, Dorothee ^{[1
]}

Cowburn, Russell ^{[1
]}

Robinson, Jason ^{[6
]}

Barker, Joseph ^{[7
]}

Ciccarelli, Chiara ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Lancaster, Phys Dept, Lancaster LA1 4YB, England

[3] TU Dortmund, Expt Phys 6, Otto Hahn Str 4, D-44227 Dortmund, Germany

[4] Univ Konstanz, Dept Phys, Univ Str 10, D-78457 Constance, Germany

[5] Univ Konstanz, Ctr Appl Photon, Univ Str 10, D-78457 Constance, Germany

[6] Dept Mat Sci & Met, 27 Charles Babbage Rd, Cambridge CB3 0FS, England

[7] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

来源：

APPLIED PHYSICS LETTERS | 2021年 / 119卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

GADOLINIUM GALLIUM GARNET;

D O I：

10.1063/5.0050205

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We performed temperature-dependent optical pump-THz emission measurements in Y3Fe5O12 (YIG)|Pt from 5 K to room temperature in the presence of an externally applied magnetic field. We study the temperature dependence of the spin Seebeck effect and observe a continuous increase as temperature is decreased, opposite to what is observed in electrical measurements, where the spin Seebeck effect is suppressed as 0 K is approached. By quantitatively analyzing the different contributions, we isolate the temperature dependence of the spin-mixing conductance and observe features that are correlated with the bands of magnon spectrum in YIG.

引用

页数：6

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