A Monte Carlo study of realistic models of metallic spin glasses

Chakrabarti, A. ; Dasgupta, C. (1988) A Monte Carlo study of realistic models of metallic spin glasses Journal of Physics C: Solid State Physics, 21 (8). pp. 1613-1630. ISSN 0022-3719

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Official URL: http://iopscience.iop.org/0022-3719/21/8/033

Related URL: http://dx.doi.org/10.1088/0022-3719/21/8/033


Monte Carlo simulation methods are used to study the critical behaviour of the classical Ruderman-Kittel-Kasuya-Yosida model (RKKY) metallic spin glasses both with and without the presence of weak Dzyaloshinskii-Moriya anisotropy (DM). Finite-size scaling analyses of the data for equilibrium averages and relaxation times indicate a zero-temperature critical point for the isotropic RKKY model. When the DM interaction is included, the model exhibits a phase transition at a non-zero temperature. The values of the critical exponents at this transition are close to those obtained for the three-dimensional short-range Ising spin glass and in experiments on CuMn.

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