Picosecond Spin Seebeck Effect

Johannes Kimling; Gyung Min Choi; Jack T. Brangham; Tristan Matalla-Wagner; Torsten Huebner; Timo Kuschel; Fengyuan Yang; David G. Cahill

doi:10.1103/PhysRevLett.118.057201

Picosecond Spin Seebeck Effect

Johannes Kimling, Gyung Min Choi, Jack T. Brangham, Tristan Matalla-Wagner, Torsten Huebner, Timo Kuschel, Fengyuan Yang, David G. Cahill

Research output: Contribution to journal › Article

Abstract

We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect in normal metal/Y3Fe5O12 bilayers driven by an interfacial temperature difference between electrons and magnons. The measured time evolution of spin accumulation induced by laser excitation indicates transfer of angular momentum across normal metal/Y3Fe5O12 interfaces on a picosecond time scale, too short for contributions from a bulk temperature gradient in an yttrium iron garnet. The product of spin-mixing conductance and the interfacial spin Seebeck coefficient determined is of the order of 108 A m-2 K-1.

Original language	English (US)
Article number	057201
Journal	Physical review letters
Volume	118
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.118.057201
State	Published - Feb 1 2017

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.118.057201

Fingerprint Dive into the research topics of 'Picosecond Spin Seebeck Effect'. Together they form a unique fingerprint.

Cite this

@article{a0e8067d1a9045b088a9b5633eb46d13,

title = "Picosecond Spin Seebeck Effect",

abstract = "We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect in normal metal/Y3Fe5O12 bilayers driven by an interfacial temperature difference between electrons and magnons. The measured time evolution of spin accumulation induced by laser excitation indicates transfer of angular momentum across normal metal/Y3Fe5O12 interfaces on a picosecond time scale, too short for contributions from a bulk temperature gradient in an yttrium iron garnet. The product of spin-mixing conductance and the interfacial spin Seebeck coefficient determined is of the order of 108 A m-2 K-1.",

author = "Johannes Kimling and Choi, {Gyung Min} and Brangham, {Jack T.} and Tristan Matalla-Wagner and Torsten Huebner and Timo Kuschel and Fengyuan Yang and Cahill, {David G.}",

year = "2017",

month = feb,

day = "1",

doi = "10.1103/PhysRevLett.118.057201",

language = "English (US)",

volume = "118",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Picosecond Spin Seebeck Effect

AU - Kimling, Johannes

AU - Choi, Gyung Min

AU - Brangham, Jack T.

AU - Matalla-Wagner, Tristan

AU - Huebner, Torsten

AU - Kuschel, Timo

AU - Yang, Fengyuan

AU - Cahill, David G.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect in normal metal/Y3Fe5O12 bilayers driven by an interfacial temperature difference between electrons and magnons. The measured time evolution of spin accumulation induced by laser excitation indicates transfer of angular momentum across normal metal/Y3Fe5O12 interfaces on a picosecond time scale, too short for contributions from a bulk temperature gradient in an yttrium iron garnet. The product of spin-mixing conductance and the interfacial spin Seebeck coefficient determined is of the order of 108 A m-2 K-1.

AB - We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect in normal metal/Y3Fe5O12 bilayers driven by an interfacial temperature difference between electrons and magnons. The measured time evolution of spin accumulation induced by laser excitation indicates transfer of angular momentum across normal metal/Y3Fe5O12 interfaces on a picosecond time scale, too short for contributions from a bulk temperature gradient in an yttrium iron garnet. The product of spin-mixing conductance and the interfacial spin Seebeck coefficient determined is of the order of 108 A m-2 K-1.

UR - http://www.scopus.com/inward/record.url?scp=85012940868&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85012940868&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.118.057201

DO - 10.1103/PhysRevLett.118.057201

M3 - Article

C2 - 28211731

AN - SCOPUS:85012940868

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 5

M1 - 057201

ER -