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Random anisotropy and phase diagram of spin glasses

1985; American Institute of Physics; Volume: 57; Issue: 8 Linguagem: Inglês

10.1063/1.335107

1520-8850

A. Fert, Nadine de Courtenay, I. A. Campbell,

Neural Networks and Applications

Torque measurements on CuMn, CuMnAu, and AuFe alloys confirm the phase diagram predicted by Kotliar and Sompolinsky for Heisenberg spin glasses with random anisotropy in the presence of an applied field. At low fields the transition is Ising-like. High enough fields restore the behavior expected for Heisenberg glasses without random anisotropy.