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  Coherent Optical Phonons and Parametrically Coupled Magnons Induced by Femtosecond Laser Excitation of the Gd(0001) Surface

Melnikov, A., Radu, I., Bovensiepen, U., Krupin, O., Starke, K., Matthias, E., et al. (2003). Coherent Optical Phonons and Parametrically Coupled Magnons Induced by Femtosecond Laser Excitation of the Gd(0001) Surface. Physical Review Letters, 91(22): 227403. doi:10.1103/PhysRevLett.91.227403.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-28CA-2 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-3A88-8
Genre: Journal Article

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PhysRevLett.91.227403.pdf (Publisher version), 268KB
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https://hdl.handle.net/21.11116/0000-000E-28CC-0
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2003
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 Creators:
Melnikov, A.1, Author
Radu, I.1, Author
Bovensiepen, U.1, Author
Krupin, O.1, Author
Starke, K.1, Author
Matthias, E.1, Author
Wolf, Martin1, Author                 
Affiliations:
1Freie Universität Berlin, Fachbereich Physik, ou_persistent22              

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 Abstract: Coherent spin dynamics in the THz domain coupled to a coherent phonon is observed in the time-resolved second harmonic response of the Gd(0001) ferromagnetic metal surface. An LO phonon of 2.9 THz is excited by a transient charge displacement at the surface caused by resonant absorption of a fs laser pulse in the exchange-split surface state. This lattice vibration modulates the interlayer distance inducing a coherent variation of the exchange interaction between spins in adjacent layers. The resulting magnetization dynamics is considered as optical magnon wave packets coupled to the phonon.

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Language(s): eng - English
 Dates: 2003-05-142003-11-26
 Publication Status: Issued
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.91.227403
 Degree: -

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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: 4 Volume / Issue: 91 (22) Sequence Number: 227403 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1