Ising spin glass near the percolation threshold
- 14 July 1978
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 11 (13) , L541-L545
- https://doi.org/10.1088/0022-3719/11/13/009
Abstract
A random-bond Ising model which exhibits ferromagnetic, antiferromagnetic and spin-glass transitions is studied using the n-replica method. A mean-field phase diagram is obtained for the model near the percolation threshold and it is found that only a small concentration of antiferromagnetic bonds is necessary to destroy ferromagnetism and lead to the formation of a spin-glass state. The fixed points corresponding to the different transitions are located and critical exponents calculated near six dimensions.Keywords
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