On Magnon Damping in Antiferromagnets in Zero External Magnetic Fields
S. A. BreusPhysico-Technical Institute, Academy of Sciences of the Ukrainian SSR, DonetskV. L. SobolevPhysico-Technical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk
1980en
ABI
Abstract
Abstract It is shown that the dipole–dipole part of the antiferromagnet Hamiltonian makes a small contribution both to the amplitudes of magnon–magnon interactions and to the coefficients of magnon damping. Possible relaxation mechanisms explaining the temperature‐independent part of damping, which is observed in the experiment, are proposed.
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