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Normal Modes and Soliton Resonance for Vortices in 2D Classical Antiferromagnets

B. A. Ivanov, A. K. Kolezhuk and G. M. Wysin
Department of Physics, Kansas State University, Manhattan, KS 66506-2601

Wed Sep 6 18:52:18 CDT 1995


Magnon modes in the presence of solitons (vortices) in two-dimensional (2D) easy-plane antiferromagnets are studied. The vortex-magnon scattering matrix is obtained numerically. The analysis shows the presence of a new localized mode with a well-defined frequency determined by the strength of the anisotropy. It may be possible to observe this mode in resonance experiments for quasi-2D magnetic materials with a finite density of vortices.

PACS numbers: 75.10Hk, 75.30.Ds, 75.40Gb, 75.50Ee

Submitted to Physical Review Letters

This preprint also available in RevTeX. (A zipped file including postscript figures).

Gary M Wysin
Wed Sep 6 18:51:57 CDT 1995