Intrinsic self-localized magnons in one-dimensional antiferromagnets
- 1 March 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 45 (9) , 5083-5086
- https://doi.org/10.1103/physrevb.45.5083
Abstract
The nonlinearity in magnon systems in one-dimensional Heisenberg antiferromagnets is shown to produce two types of intrinsic self-localized modes, symmetric and antisymmetric, below the magnon frequency band. In the case of extreme localization, the localized modes can be viewed as a two-spin bound state or a local spin-liquid state, where a pair of spins undergoes a large excursion as compared with the rest of the spins.Keywords
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