Detection of femtosecond spin voltage pulses in a thin iron film

Detection of femtosecond spin voltage pulses in a thin iron film

We present experimental evidence of a spin voltage—a difference between the chemical potentials of the two spin directions—in a thin iron film based on spin- and time-resolved photoemission spectroscopy. This voltage is the driving force for a spin current during the ultrafast demagnetization of the...

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Main Authors: K. Bühlmann, G. Saerens, A. Vaterlaus, Y. Acremann
Format: Article
Language:English
Published: AIP Publishing LLC and ACA 2020-11-01
Series:Structural Dynamics
Online Access:http://dx.doi.org/10.1063/4.0000037
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spelling doaj-94f3e48dd3d74388bb85b3ecded6ae0d2021-01-05T15:00:22ZengAIP Publishing LLC and ACAStructural Dynamics2329-77782020-11-0176065101065101-510.1063/4.0000037Detection of femtosecond spin voltage pulses in a thin iron filmK. Bühlmann0G. Saerens1A. Vaterlaus2Y. Acremann3Laboratory for Solid State Physics, ETH Zurich, 8093 Zurich, SwitzerlandLaboratory for Solid State Physics, ETH Zurich, 8093 Zurich, SwitzerlandLaboratory for Solid State Physics, ETH Zurich, 8093 Zurich, SwitzerlandLaboratory for Solid State Physics, ETH Zurich, 8093 Zurich, SwitzerlandWe present experimental evidence of a spin voltage—a difference between the chemical potentials of the two spin directions—in a thin iron film based on spin- and time-resolved photoemission spectroscopy. This voltage is the driving force for a spin current during the ultrafast demagnetization of the sample. The observed magnitude is on the order of 50 mV, a value that is quite consistent with predictions based on particle conservation and persists for approximately 100 fs.http://dx.doi.org/10.1063/4.0000037
collection DOAJ
language English
format Article
sources DOAJ
author K. Bühlmann
G. Saerens
A. Vaterlaus
Y. Acremann
spellingShingle K. Bühlmann
G. Saerens
A. Vaterlaus
Y. Acremann
Detection of femtosecond spin voltage pulses in a thin iron film
Structural Dynamics
author_facet K. Bühlmann
G. Saerens
A. Vaterlaus
Y. Acremann
author_sort K. Bühlmann
title Detection of femtosecond spin voltage pulses in a thin iron film
title_short Detection of femtosecond spin voltage pulses in a thin iron film
title_full Detection of femtosecond spin voltage pulses in a thin iron film
title_fullStr Detection of femtosecond spin voltage pulses in a thin iron film
title_full_unstemmed Detection of femtosecond spin voltage pulses in a thin iron film
title_sort detection of femtosecond spin voltage pulses in a thin iron film
publisher AIP Publishing LLC and ACA
series Structural Dynamics
issn 2329-7778
publishDate 2020-11-01
description We present experimental evidence of a spin voltage—a difference between the chemical potentials of the two spin directions—in a thin iron film based on spin- and time-resolved photoemission spectroscopy. This voltage is the driving force for a spin current during the ultrafast demagnetization of the sample. The observed magnitude is on the order of 50 mV, a value that is quite consistent with predictions based on particle conservation and persists for approximately 100 fs.
url http://dx.doi.org/10.1063/4.0000037
work_keys_str_mv AT kbuhlmann detectionoffemtosecondspinvoltagepulsesinathinironfilm
AT gsaerens detectionoffemtosecondspinvoltagepulsesinathinironfilm
AT avaterlaus detectionoffemtosecondspinvoltagepulsesinathinironfilm
AT yacremann detectionoffemtosecondspinvoltagepulsesinathinironfilm
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