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

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Citation

Kim, S., & Kim, S. (2002). Internal localized eigenmodes on spin discrete breathers in antiferromagnetic chains with on-site easy-axis anisotropy. PHYSICAL REVIEW B, 66(21): 212408. doi:10.1103/PhysRevB.66.212408.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-5B09-A
Abstract
We investigate internal localized eigenmodes of the linearized equation around spin discrete breathers in one-dimensional antiferromagnets with on-site easy-axis anisotropy. The threshold of occurrence of the internal localized eigenmodes has a typical structure in the 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.