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Internal localized eigenmodes on spin discrete breathers in antiferromagnetic chains with on-site easy axis anisotropy

Sang Wook Kim·Seunghwan Kim
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Abstract

We investigate internal localized eigenmodes of the linearized equation around spin discrete breathers in 1D antiferromagnets with on-site easy axis anisotropy. The threshold of occurrence of the internal localized eigenmodes has a typical structure in parameter space depending on the frequency of the spin discrete breather. We also performed molecular dynamics simulation in order to show the validity of our linear analysis.

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Sang Wook Kim, Seunghwan Kim. 2002-07-02. Internal localized eigenmodes on spin discrete breathers in antiferromagnetic chains with on-site easy axis anisotropy. https://doi.org/10.1103/physrevb.66.212408

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