Excitations in the classicalXYchain
| Autor: | David P. Landau, R. W. Gerling, M. S. S. Challa |
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| Rok vydání: | 1988 |
| Předmět: | |
| Zdroj: | Journal of Applied Physics. 64:5879-5881 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.342187 |
| Popis: | We have studied the time‐dependent behavior of the classical XY chain in a symmetry breaking magnetic field using an ultrafast spin‐dynamics method in which we integrate the equations of motion using starting configurations determined by Monte Carlo simulations. We calculated the three polarizations of S(q,ω) separately for temperatures from 0.1 to 1.0 J/kB and fields up to 1.5 J. The soliton contribution, the single‐magnon peaks, and both the sum and difference two‐magnon contributions are separated; we discuss them in detail and compare them with theoretical predictions. |
| Databáze: | OpenAIRE |
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