| Author | dc.contributor.author | Davis, Sergio | |
| Author | dc.contributor.author | Gutiérrez Gallardo, Gonzalo | es_CL |
| Admission date | dc.date.accessioned | 2007-05-18T15:25:43Z | |
| Available date | dc.date.available | 2007-05-18T15:25:43Z | |
| Publication date | dc.date.issued | 2005-01-31 | |
| Cita de ítem | dc.identifier.citation | PHYSICA B-CONDENSED MATTER 355 (1-4): 1-8 JAN 31 2005 | en |
| Identifier | dc.identifier.issn | 0921-4526 | |
| Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/118623 | |
| Abstract | dc.description.abstract | We investigate the dynamic properties of a classical anisotropic Heisenberg chain interacting with an external magnetic field at different temperatures. Properties such as time-dependent energy autocorrelation and space-time spin-spin correlation are obtained by solving the dynamic equation Si = Si x dels(i)H. While the static spin-spin correlation length decreases as the system is heated up, it increases when an external magnetic field is present. The time-dependent spin-spin correlation decreases when the system is heated up, resulting in a decrease of the spin-diffusion speed. The presence of the magnetic field contributes to the order, and therefore produces an increase of the spin-diffusion speed. In contrast, the single-ion type anisotropy behaves dynamically as a local field, inducing disorder in the chain. | en |
| Lenguage | dc.language.iso | en | en |
| Publisher | dc.publisher | ELSEVIER SCIENCE BV | en |
| Keywords | dc.subject | SPIN | en |
| Título | dc.title | Dynamic properties of a classical anisotropic Heisenberg chain under external magnetic field | en |
| Document type | dc.type | Artículo de revista | |
