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VOLUME 83 (2006) | ISSUE 6 | PAGE 282
High-Field Low-Frequency Spin Dynamics
PACS: 75.10.-b, 75.30.Ds, 75.30.Gw, 76.50.+g
Abstract
The theory of exchange symmetry of spin ordered states is extended to the case of high magnetic field. Low frequency spin dynamics equation for quasi-goldstone mode is derived for two cases of collinear and noncollinear antiferromagnets. A new relation between static and dynamic characteristics is found.