Monte Carlo Simulation of a Random-Field Ising Antiferromagnet

Details Monte Carlo Simulation of a Random-Field Ising Antiferromagnet Monte Carlo Simulation of a Random-Field Ising Antiferromagnet

2005-10-03

arxiv.org/abs/cond-mat/0510052v1

JETP, Vol.101, No.2, 2005, pp.294-298

Physics

Condensed Matter

Other Condensed Matter

10 pages, 11 figures

Scientific paper

10.1134/1.2047794

Phase transitions in the three-dimensional diluted Ising antiferromagnet in an applied magnetic field are analyzed numerically. It is found that random magnetic field in a system with spin concentration below a certain threshold induces a crossover from second-order phase transition to first-order transition to a new phase characterized by a spin-glass ground state and metastable energy states at finite temperatures.

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