| Magnon-enhanced phonon damping at Gd(0001) and Tb(0001) surfaces using femtosecond time-resolved optical second-harmonic generation. | |
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MedLine Citation:
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PMID: 18643627 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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Damping of coherent optical phonons is investigated by femtosecond time-resolved second-harmonic generation at Gd(0001) and Tb(0001) surfaces. At low temperature the damping rate increases monotonically with temperature, but close to the Curie point the damping rate is strongly reduced. We explain this behavior by phonon-magnon scattering originating from spin-orbit coupling proven by a larger effect for Tb than for Gd. Consideration of phonon-electron and phonon-phonon scattering shows that magnon-mediated damping is dominant almost up to the Curie temperature. |
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Authors:
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A Melnikov; A Povolotskiy; U Bovensiepen |
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Publication Detail:
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Type: Journal Article Date: 2008-06-19 |
Journal Detail:
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Title: Physical review letters Volume: 100 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-07-22 Completed Date: 2008-08-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 247401 Citation Subset: - |
Affiliation:
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Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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