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- Dokumenttyp:
- Zeitschriftenaufsatz
- Autor(en):
- Koralek, J. D.; Meier, D.; Hinton, J. P.; Bauer, A.; Parameswaran, S. A.; Vishwanath, A.; Ramesh, R.; Schoenlein, R. W.; Pfleiderer, C.; Orenstein, J.
- Titel:
- Observation of {{Coherent Helimagnons}} and {{Gilbert Damping}} in an {{Itinerant Magnet}}
- Abstract:
- We study the magnetic excitations of itinerant helimagnets by applying time-resolved optical spectroscopy to Fe0.8Co0.2Si. Optically excited oscillations of the magnetization in the helical state are found to disperse to lower frequency as the applied magnetic field is increased; the fingerprint of collective modes unique to helimagnets, known as helimagnons. The use of time-resolved spectroscopy allows us to address the fundamental magnetic relaxation processes by directly measuring the Gilber... »
- Zeitschriftentitel:
- Physical Review Letters
- Jahr:
- 2012
- Band / Volume:
- 109
- Monat:
- dec
- Heft / Issue:
- 24
- Seitenangaben Beitrag:
- 247204
- Volltext / DOI:
- doi:10.1103/PhysRevLett.109.247204
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