Time resolved spin Seebeck effect experiments

被引：41

作者：

Roschewsky, Niklas ^{[1
]}

Schreier, Michael ^{[1
]}

Kamra, Akashdeep ^{[1
,2
]}

Schade, Felix ^{[1
]}

Ganzhorn, Kathrin ^{[1
]}

Meyer, Sibylle ^{[1
]}

Huebl, Hans ^{[1
,3
]}

Gepraegs, Stephan ^{[1
]}

Gross, Rudolf ^{[1
,3
,4
]}

Goennenwein, Sebastian T. B. ^{[1
,3
]}

机构：

[1] Bayer Akad Wissensch, Walther Meissner Inst, Garching, Germany

[2] Delft Univ Technol, Kavli Inst Nanosci, Delft, Netherlands

[3] NIM, Munich, Germany

[4] Tech Univ Munich, Dept Phys, Garching, Germany

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 20期

关键词：

MAGNONS; TEMPERATURE;

D O I：

10.1063/1.4879462

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this Letter, we present the results of transient thermopower experiments, performed at room temperature on yttrium iron garnet/platinum bilayers. Upon application of a time-varying thermal gradient, we observe a characteristic low-pass frequency response of the ensuing thermopower voltage with cutoff frequencies of up to 37 MHz. We interpret our results in terms of the spin Seebeck effect, and argue that small wavevector magnons are of minor importance for the spin Seebeck effect in our thin film hybrid structures. (C) 2014 AIP Publishing LLC.

引用

页数：4

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