| Автор | M Z Cieplak |
| Автор | M Cieplak |
| Дата выпуска | 1984-06-10 |
| dc.description | Results of Monte Carlo studies of thermodynamical quantities in a generalisation of the Edwards-Anderson model are presented. The model contains a fraction x of antiferromagnetic bonds and (1-x) of ferromagnetic ones. The magnitudes of the exchange constants are given by a gaussian distribution and the Heisenberg spins are coupled by nearest-neighbour interactions. The samples with x=0 and x=0.2 are ferromagnetic, below a critical temperature. The samples with x=0.4 and x=0.5 are spin glasses. In these two cases the specific heat shows a broad maximum whereas the susceptibility seems to follow a mixture of cusp-like and 1/T-behaviours. T=0 studies of the magnetisation as a function of concentration suggest that the spin-glass-ferromagnet transition occurs at x=0.31+or-0.04 and is continuous. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Numerical studies of the isotropic Heisenberg model for random ferromagnets and spin glasses |
| Тип | paper |
| DOI | 10.1088/0022-3719/17/16/012 |
| Print ISSN | 0022-3719 |
| Журнал | Journal of Physics C: Solid State Physics |
| Том | 17 |
| Первая страница | 2933 |
| Последняя страница | 2942 |
| Аффилиация | M Z Cieplak; Inst. of Phys., Polish Acad. of Sci., Warsaw, Poland |
| Аффилиация | M Cieplak; Inst. of Phys., Polish Acad. of Sci., Warsaw, Poland |
| Выпуск | 16 |
