Random anisotropy in ising spin glass |
| |
| Authors: | MCristina Forti R Kishore IC Da Cunha Lima |
| |
| Institution: | Instituto de Pesquisas Espaciais, INPE, Conselho Nacional de Desenvolvimento Científico e Technológico, CNPq, 12200 São José dos Campos, SP, Brazil |
| |
| Abstract: | The theory of Ghatak and Sherrington for the Ising spin glass with uniform uniaxial anisotropy has been extended for the random uniaxial anisotropy (RUA). The magnitude of the RUA is assumed to fluctuate randomly with gaussian probability distribution. The susceptibility and the specific heat have been calculated for a system of spin one and zero mean values of the anisotropy and the exchange interaction. It is found that the random fluctuations of the anisotropy produce a cusp in the susceptibility and a broad maximum in the specific heat. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
