Long wavelength dynamics in a 1D planar ferromagnet: Magnetostatic modes and soliton-induced damping in CsNiF3 : 35th annual conference on magnetism and magnetic materials San Diego, California (USA) 29 Oct − 1 Nov 1990
Reich, Daniel H. ; Lévy, Laurent P. ; Hawthorne, Dean L.
[S.l.] : American Institute of Physics (AIP)
Published 1991
[S.l.] : American Institute of Physics (AIP)
Published 1991
| ISSN: |
1089-7550
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
Above 2.6 K, CsNiF3 is an excellent example of a soliton-bearing spin-chain system. We have studied the long wavelength excitations in CsNiF3 by spin resonance, using a strip line technique that couples to finite q excitations. In addition to the uniform precession mode, we have observed a magnetostatic resonance. It lies at a lower energy than the uniform mode, consistent with the spectrum expected in linear response. The uniform mode, however, broadens much more rapidly with temperature. We propose that a dipolar magnon-soliton interaction is the dominant channel for the relaxation of long wavelength excitations in this quasi-1D system.
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| Type of Medium: |
Electronic Resource
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| URL: |