Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission
Abstract
We use time-resolved X-ray photoelectron spectroscopy to probe the electronic and magnetization dynamics in FeRh films after ultrafast laser excitations. We present experimental and theoretical results which investigate the electronic structure of FeRh during the first-order phase transition, identifying a clear signature of the magnetic phase. We find that a spin polarized feature at the Fermi edge is a fingerprint of the magnetic status of the system that is independent of the long-range ferromagnetic alignment of the magnetic domains. Here we use this feature to follow the phase transition induced by a laser pulse in a pump-probe experiment and find that the magnetic transition occurs in less than 50 ps and reaches its maximum in 100 ps
- Authors:
-
- Synchrotron SOLEIL, Gif-sur-Yvette Cedex (France); Univ. of Hamburg, Hamburg (Germany)
- Brno Univ. of Technology, Brno (Czech Republic)
- Synchrotron SOLEIL, Gif-sur-Yvette Cedex (France); Univ. Paris Saclay, Palaiseau (France)
- Synchrotron SOLEIL, Gif-sur-Yvette Cedex (France);
- Univ. of California, San Diego, La Jolla, CA (United States)
- Instituto Officina dei Materiali (IOM)-CNR, Trieste (Italy)
- Publication Date:
- Research Org.:
- Univ. of California, San Diego, La Jolla, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1498997
- Alternate Identifier(s):
- OSTI ID: 1438510
- Grant/Contract Number:
- SC0003678
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Structural Dynamics
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 3; Journal ID: ISSN 2329-7778
- Publisher:
- American Crystallographic Association/AIP
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Synchrotrons; Epitaxy; Pump probe experiments; Femtosecond lasers; Magnetization dynamics; X-ray photoelectron spectroscopy; Electromagnetism; Ultrafast lasers; Phase transitions; Ferromagnetic materials
Citation Formats
Pressacco, Federico, Uhlíř, Vojtěch, Gatti, Matteo, Nicolaou, Alessandro, Bendounan, Azzedine, Arregi, Jon Ander, Patel, Sheena K. K., Fullerton, Eric E., Krizmancic, Damjan, and Sirotti, Fausto. Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission. United States: N. p., 2018.
Web. doi:10.1063/1.5027809.
Pressacco, Federico, Uhlíř, Vojtěch, Gatti, Matteo, Nicolaou, Alessandro, Bendounan, Azzedine, Arregi, Jon Ander, Patel, Sheena K. K., Fullerton, Eric E., Krizmancic, Damjan, & Sirotti, Fausto. Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission. United States. https://doi.org/10.1063/1.5027809
Pressacco, Federico, Uhlíř, Vojtěch, Gatti, Matteo, Nicolaou, Alessandro, Bendounan, Azzedine, Arregi, Jon Ander, Patel, Sheena K. K., Fullerton, Eric E., Krizmancic, Damjan, and Sirotti, Fausto. Wed .
"Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission". United States. https://doi.org/10.1063/1.5027809. https://www.osti.gov/servlets/purl/1498997.
@article{osti_1498997,
title = {Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission},
author = {Pressacco, Federico and Uhlíř, Vojtěch and Gatti, Matteo and Nicolaou, Alessandro and Bendounan, Azzedine and Arregi, Jon Ander and Patel, Sheena K. K. and Fullerton, Eric E. and Krizmancic, Damjan and Sirotti, Fausto},
abstractNote = {We use time-resolved X-ray photoelectron spectroscopy to probe the electronic and magnetization dynamics in FeRh films after ultrafast laser excitations. We present experimental and theoretical results which investigate the electronic structure of FeRh during the first-order phase transition, identifying a clear signature of the magnetic phase. We find that a spin polarized feature at the Fermi edge is a fingerprint of the magnetic status of the system that is independent of the long-range ferromagnetic alignment of the magnetic domains. Here we use this feature to follow the phase transition induced by a laser pulse in a pump-probe experiment and find that the magnetic transition occurs in less than 50 ps and reaches its maximum in 100 ps},
doi = {10.1063/1.5027809},
journal = {Structural Dynamics},
number = 3,
volume = 5,
place = {United States},
year = {Wed May 23 00:00:00 EDT 2018},
month = {Wed May 23 00:00:00 EDT 2018}
}
Web of Science
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Works referencing / citing this record:
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