Reentrant spin-glass transition in a dilute magnet

Details Reentrant spin-glass transition in a dilute magnet Reentrant spin-glass transition in a dilute magnet

2005-04-25

arxiv.org/abs/cond-mat/0504615v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 8 figures

Scientific paper

10.1103/PhysRevLett.94.227202

We have performed a large scale Monte Carlo simulation of a dilute classical Heisenberg model with ferromagnetic nearest neighbor and antiferromagnetic next-nearest neighbor interactions. We found that the model reproduces a reentrant spin-glass transition. That is, as the temperature is decreased, the magnetization increases rapidly below a certain temperature, reaches a maximum value, then ceases at some lower temperature. The low temperature phase was suggested to be a spin-glass phase that is characterized by ferromagnetic clusters.

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