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 | |
| State | Published - Feb 1 2017 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Picosecond Spin Seebeck Effect. / Kimling, Johannes; Choi, Gyung Min; Brangham, Jack T.; Matalla-Wagner, Tristan; Huebner, Torsten; Kuschel, Timo; Yang, Fengyuan; Cahill, David G.
In: Physical review letters, Vol. 118, No. 5, 057201, 01.02.2017.Research output: Contribution to journal › Article
}
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
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U2 - 10.1103/PhysRevLett.118.057201
DO - 10.1103/PhysRevLett.118.057201
M3 - Article
AN - SCOPUS:85012940868
VL - 118
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 5
M1 - 057201
ER -