L. Rettig, C. Dornes, Nele Thielemann-Kuehn, N. Pontius, Hartmut Zabel, D. L. Schlagel, T. A. Lograsso, M. Chollet, A. Robert, M. Sikorski, S. Song, J. M. Glownia, Christian Schuessler-Langeheine, S. L. Johnson, U. Staub
- Using femtosecond time-resolved resonant magnetic x-ray diffraction at the Ho L-3 absorption edge, we investigate the demagnetization dynamics in antiferromagnetically ordered metallic Ho after femtosecond optical excitation. Tuning the x-ray energy to the electric dipole (E1, 2p -> 5d) or quadrupole (E2, 2p -> 4f) transition allows us to selectively and independently study the spin dynamics of the itinerant 5d and localized 4f electronic subsystems via the suppression of the magnetic (2 1 3-tau) satellite peak. We find demagnetization time scales very similar to ferromagnetic 4f systems, suggesting that the loss of magnetic order occurs via a similar spin-flip process in both cases. The simultaneous demagnetization of both subsystems demonstrates strong intra-atomic 4f-5d exchange coupling. In addition, an ultrafast lattice contraction due to the release of magneto-striction leads to a transient shift of the magnetic satellite peak.
MetadatenAuthor details: | L. Rettig, C. Dornes, Nele Thielemann-Kuehn, N. Pontius, Hartmut ZabelGND, D. L. Schlagel, T. A. Lograsso, M. Chollet, A. Robert, M. Sikorski, S. Song, J. M. Glownia, Christian Schuessler-LangeheineORCiD, S. L. Johnson, U. Staub |
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DOI: | https://doi.org/10.1103/PhysRevLett.116.257202 |
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ISSN: | 0031-9007 |
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ISSN: | 1079-7114 |
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Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/27391747 |
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Title of parent work (English): | Physical review letters |
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Publisher: | American Physical Society |
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Place of publishing: | College Park |
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Publication type: | Article |
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Language: | English |
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Year of first publication: | 2016 |
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Publication year: | 2016 |
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Release date: | 2020/03/22 |
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Volume: | 116 |
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Number of pages: | 6 |
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First page: | 6382 |
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Last Page: | 6389 |
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Funding institution: | U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-76SF00515]; U.S. Department of Energy [DE-AC02-07CH11358]; National Center of Competence in Research: Molecular Ultrafast Science and Technology (NCCR MUST)), a research instrument of the Swiss National Science Foundation (SNSF); Helmholtz Virtual Institute Dynamic Pathways in Multidimensional Landscapes; BMBF [05K13PC1] |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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Peer review: | Referiert |
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