Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission
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arXiv
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| Autores principales: | , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2018
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| _version_ | 1866916495305474048 |
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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 |
| contents | 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 the 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 | Preprint |
| id |
arxiv_https___arxiv_org_abs_1803_00780 |
| institution | arXiv |
| publishDate | 2018 |
| record_format | arxiv |
| spellingShingle | 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 Strongly Correlated Electrons 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 the 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. |
| title | Laser induced phase transition in epitaxial FeRh layers studied by pump-probe valence band photoemission |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/1803.00780 |