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Femtosecond formation dynamics of the spin Seebeck effect revealed by terahertz spectroscopy

Authors :
Tom S. Seifert
Samridh Jaiswal
Joseph Barker
Sebastian T. Weber
Ilya Razdolski
Joel Cramer
Oliver Gueckstock
Sebastian F. Maehrlein
Lukas Nadvornik
Shun Watanabe
Chiara Ciccarelli
Alexey Melnikov
Gerhard Jakob
Markus Münzenberg
Sebastian T. B. Goennenwein
Georg Woltersdorf
Baerbel Rethfeld
Piet W. Brouwer
Martin Wolf
Mathias Kläui
Tobias Kampfrath
Source :
Nature Communications, Vol 9, Iss 1, Pp 1-11 (2018)
Publication Year :
2018
Publisher :
Nature Portfolio, 2018.

Abstract

Probing spin pumping in the terahertz regime allows one to reveal its initial elementary steps. Here, the authors show that the formation of the spin Seebeck current in YIG/Pt critically relies on hot thermalized metal electrons because they impinge on the metal-insulator interface with maximum noise.

Subjects

Subjects :
Science

Details

Language :
English
ISSN :
20411723
Volume :
9
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Nature Communications
Publication Type :
Academic Journal
Accession number :
edsdoj.676e2dcfa42143d08067743f84e9f92c
Document Type :
article
Full Text :
https://doi.org/10.1038/s41467-018-05135-2