Laser excitation of lattice-driven anharmonic magnetization dynamics in dielectric FeBO3

Laser excitation of lattice-driven anharmonic magnetization dynamics in dielectric FeBO3

Femtosecond laser pulses trigger in dielectric FeBO3 coherent oscillations of the magnetic anisotropy followed by spins. The oscillations are driven by optically excited lattice vibrations strongly coupled to the magnetic system. Unlike the spin resonances, this mode is characterized by a very small...

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Veröffentlicht in:Physical review letters 2014-04, Vol.112 (14), p.147403-147403
Hauptverfasser: Afanasiev, D, Razdolski, I, Skibinsky, K M, Bolotin, D, Yagupov, S V, Strugatsky, M B, Kirilyuk, A, Rasing, Th, Kimel, A V
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Sprache:eng
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Zusammenfassung:Femtosecond laser pulses trigger in dielectric FeBO3 coherent oscillations of the magnetic anisotropy followed by spins. The oscillations are driven by optically excited lattice vibrations strongly coupled to the magnetic system. Unlike the spin resonances, this mode is characterized by a very small damping ratio and can be easily pushed into an anharmonic regime.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.112.147403