Lock-in thermography measurements of the spin Peltier effect in a compensated ferrimagnet and its comparison to the spin Seebeck effect

A. Yagmur; R. Iguchi; S. Geprägs; A. Erb; S. Daimon; E. Saitoh; R. Gross; K. Uchida

doi:10.1088/1361-6463/aabc75

Lock-in thermography measurements of the spin Peltier effect in a compensated ferrimagnet and its comparison to the spin Seebeck effect

A. Yagmur, R. Iguchi, S. Geprägs, A. Erb, S. Daimon, E. Saitoh, R. Gross, K. Uchida

Chair of Technical Physics

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The spin Peltier effect (SPE) in a junction comprising a gadolinium-iron-garnet (GdIG) slab and a Pt film has been investigated around the magnetization compensation temperature of GdIG by means of the lock-in thermography method. When a charge current is applied to the Pt layer, a spin current is generated across the Pt/GdIG interface via the spin Hall effect in Pt. This spin current induces a heat current and a measurable temperature change near the Pt/GdIG interface due to the SPE. The SPE signal in the Pt/GdIG junction shows a sign change around the magnetization compensation temperature, demonstrating the similar temperature dependence of the SPE and the spin Seebeck effect for the Pt/GdIG hybrid system.

Original language	English
Article number	194002
Journal	Journal of Physics D: Applied Physics
Volume	51
Issue number	19
DOIs	https://doi.org/10.1088/1361-6463/aabc75
State	Published - 20 Apr 2018

Keywords

spin caloritronics
spin current
spin Peltier effect
spin Seebeck effect

Access to Document

10.1088/1361-6463/aabc75

Cite this

@article{82f9f9e23da34ba6b5607b962ef010cd,

title = "Lock-in thermography measurements of the spin Peltier effect in a compensated ferrimagnet and its comparison to the spin Seebeck effect",

abstract = "The spin Peltier effect (SPE) in a junction comprising a gadolinium-iron-garnet (GdIG) slab and a Pt film has been investigated around the magnetization compensation temperature of GdIG by means of the lock-in thermography method. When a charge current is applied to the Pt layer, a spin current is generated across the Pt/GdIG interface via the spin Hall effect in Pt. This spin current induces a heat current and a measurable temperature change near the Pt/GdIG interface due to the SPE. The SPE signal in the Pt/GdIG junction shows a sign change around the magnetization compensation temperature, demonstrating the similar temperature dependence of the SPE and the spin Seebeck effect for the Pt/GdIG hybrid system.",

keywords = "spin caloritronics, spin current, spin Peltier effect, spin Seebeck effect",

author = "A. Yagmur and R. Iguchi and S. Gepr{\"a}gs and A. Erb and S. Daimon and E. Saitoh and R. Gross and K. Uchida",

note = "Publisher Copyright: {\textcopyright} 2018 IOP Publishing Ltd.",

year = "2018",

month = apr,

day = "20",

doi = "10.1088/1361-6463/aabc75",

language = "English",

volume = "51",

journal = "Journal of Physics D: Applied Physics",

issn = "0022-3727",

publisher = "Institute of Physics",

number = "19",

}

TY - JOUR

T1 - Lock-in thermography measurements of the spin Peltier effect in a compensated ferrimagnet and its comparison to the spin Seebeck effect

AU - Yagmur, A.

AU - Iguchi, R.

AU - Geprägs, S.

AU - Erb, A.

AU - Daimon, S.

AU - Saitoh, E.

AU - Gross, R.

AU - Uchida, K.

PY - 2018/4/20

Y1 - 2018/4/20

N2 - The spin Peltier effect (SPE) in a junction comprising a gadolinium-iron-garnet (GdIG) slab and a Pt film has been investigated around the magnetization compensation temperature of GdIG by means of the lock-in thermography method. When a charge current is applied to the Pt layer, a spin current is generated across the Pt/GdIG interface via the spin Hall effect in Pt. This spin current induces a heat current and a measurable temperature change near the Pt/GdIG interface due to the SPE. The SPE signal in the Pt/GdIG junction shows a sign change around the magnetization compensation temperature, demonstrating the similar temperature dependence of the SPE and the spin Seebeck effect for the Pt/GdIG hybrid system.

AB - The spin Peltier effect (SPE) in a junction comprising a gadolinium-iron-garnet (GdIG) slab and a Pt film has been investigated around the magnetization compensation temperature of GdIG by means of the lock-in thermography method. When a charge current is applied to the Pt layer, a spin current is generated across the Pt/GdIG interface via the spin Hall effect in Pt. This spin current induces a heat current and a measurable temperature change near the Pt/GdIG interface due to the SPE. The SPE signal in the Pt/GdIG junction shows a sign change around the magnetization compensation temperature, demonstrating the similar temperature dependence of the SPE and the spin Seebeck effect for the Pt/GdIG hybrid system.

KW - spin caloritronics

KW - spin current

KW - spin Peltier effect

KW - spin Seebeck effect

UR - http://www.scopus.com/inward/record.url?scp=85046421067&partnerID=8YFLogxK

U2 - 10.1088/1361-6463/aabc75

DO - 10.1088/1361-6463/aabc75

M3 - Article

AN - SCOPUS:85046421067

SN - 0022-3727

VL - 51

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

IS - 19

M1 - 194002

ER -

Lock-in thermography measurements of the spin Peltier effect in a compensated ferrimagnet and its comparison to the spin Seebeck effect

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this