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Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission
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, identi...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Crystallographic Association
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5966309/ https://www.ncbi.nlm.nih.gov/pubmed/29888296 http://dx.doi.org/10.1063/1.5027809 |
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author | Pressacco, Federico Uhlíř, Vojtěch Gatti, Matteo Nicolaou, Alessandro Bendounan, Azzedine Arregi, Jon Ander Patel, Sheena K. K. Fullerton, Eric E. Krizmancic, Damjan Sirotti, Fausto |
author_facet | Pressacco, Federico Uhlíř, Vojtěch Gatti, Matteo Nicolaou, Alessandro Bendounan, Azzedine Arregi, Jon Ander Patel, Sheena K. K. Fullerton, Eric E. Krizmancic, Damjan Sirotti, Fausto |
author_sort | Pressacco, Federico |
collection | PubMed |
description | 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. 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. |
format | Online Article Text |
id | pubmed-5966309 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Crystallographic Association |
record_format | MEDLINE/PubMed |
spelling | pubmed-59663092018-06-10 Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission Pressacco, Federico Uhlíř, Vojtěch Gatti, Matteo Nicolaou, Alessandro Bendounan, Azzedine Arregi, Jon Ander Patel, Sheena K. K. Fullerton, Eric E. Krizmancic, Damjan Sirotti, Fausto Struct Dyn Articles 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. 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. American Crystallographic Association 2018-05-23 /pmc/articles/PMC5966309/ /pubmed/29888296 http://dx.doi.org/10.1063/1.5027809 Text en © 2018 Author(s). 2329-7778/2018/5(3)/034501/11 All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Articles 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 |
title | Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission |
title_full | Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission |
title_fullStr | Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission |
title_full_unstemmed | Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission |
title_short | Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission |
title_sort | laser induced phase transition in epitaxial ferh layers studied by pump-probe valence band photoemission |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5966309/ https://www.ncbi.nlm.nih.gov/pubmed/29888296 http://dx.doi.org/10.1063/1.5027809 |
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