Observation of the spin Nernst effect

被引：158

作者：

Meyer, S. ^{[1
,2
]}

Chen, Y. -T. ^{[3
,4
]}

Wimmer, S. ^{[5
]}

Althammer, M. ^{[1
]}

Wimmer, T. ^{[1
,2
]}

Schlitz, R. ^{[1
,9
,10
]}

Gepraegs, S. ^{[1
]}

Huebl, H. ^{[1
,2
,6
]}

Koedderitzsch, D. ^{[5
]}

Ebert, H. ^{[5
]}

Bauer, G. E. W. ^{[3
,7
,8
]}

Gross, R. ^{[1
,2
,6
]}

Goennenwein, S. T. B. ^{[1
,2
,6
,9
,10
]}

机构：

[1] Bayerische Akad Wissensch, Walther Meissner Inst, Walther Meisser Str 8, D-85748 Garching, Germany

[2] Tech Univ Munich, Phys Dept, D-85748 Garching, Germany

[3] Delft Univ Technol, Kavli Inst NanoSci, Lorentzweg1, NL-2628 CJ Delft, Netherlands

[4] RIKEN, CEMS, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

[5] Univ Munich, Dept Chem, Phys Chem, Butenandtstr 5-13, D-81377 Munich, Germany

[6] NIM, Schellingstr 4, D-80799 Munich, Germany

[7] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[8] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[9] Tech Univ Dresden, Inst Festkorperphys, D-01062 Dresden, Germany

[10] Tech Univ Dresden, Ctr Transport & Devices Emergent Mat, D-01062 Dresden, Germany

来源：

NATURE MATERIALS | 2017年 / 16卷 / 10期

关键词：

SEMICONDUCTOR; TRANSISTOR;

D O I：

10.1038/nmat4964

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The observation of the spin Hall effect(1-3) triggered intense research on pure spin current transport(4). With the spin Hall effect(1,2,5,6), the spin Seebeck effect(7-9) and the spin Peltier effect(10,11) already observed, our picture of pure spin current transport is almost complete. The only missing piece is the spin Nernst (-Ettingshausen) effect, which so far has been discussed only on theoretical grounds(12-15). Here, we report the observation of the spin Nernst effect. By applying a longitudinal temperature gradient, we generate a pure transverse spin current in a Pt thin film. For readout, we exploit the magnetization-orientation- dependent spin transfer to an adjacent yttrium iron garnet layer, converting the spin Nernst current in Pt into a controlled change of the longitudinal and transverse thermopower voltage. Our experiments show that the spin Nernst and the spin Hall effect in Pt are of comparable magnitude, but differ in sign, as corroborated by first-principles calculations.

引用

页码：977 / +

页数：6

共 30 条

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