Observation of Coherent Helimagnons and Gilbert Damping in an Itinerant Magnet [electronic resource].
- Berkeley, Calif. : Lawrence Berkeley National Laboratory, 2012.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 4 : digital, PDF file
- Additional Creators:
- Lawrence Berkeley National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- 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 Gilbert damping, revealing the versatility of spin dynamics in chiral magnets.
- Report Numbers:
- E 1.99:lbnl-6643e
- Other Subject(s):
- Published through SciTech Connect.
Physical Review Letters 109 FT
Ramesh, R.; Schoenlein, R.W.; Bauer, A.; Pfleiderer, C.; Parameswaran, S. A.; Koralek, J. D.; Orenstein, J.; Meier, D.; Hinton, J. P.; Vishwanath, A.
Materials Sciences Division
- Funding Information:
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