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Numerical studies of the isotropic Heisenberg model for random ferromagnets and spin glasses
| Content Provider | Scilit |
|---|---|
| Author | Cieplak, M. Z. |
| Copyright Year | 1984 |
| Description | Journal: Journal of Physics C: Solid State Physics 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. |
| Related Links | http://iopscience.iop.org/article/10.1088/0022-3719/17/16/012/pdf |
| Ending Page | 2942 |
| Page Count | 10 |
| Starting Page | 2933 |
| ISSN | 00223719 |
| DOI | 10.1088/0022-3719/17/16/012 |
| Journal | Journal of Physics C: Solid State Physics |
| Issue Number | 16 |
| Volume Number | 17 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1984-06-10 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics C: Solid State Physics Condensed Matter Physics Antiferromagnetic Nearest Neighbour Spin Glass Ferromagnet |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Condensed Matter Physics Engineering |
