Phase Transition in Heisenberg Fully Frustrated Simple Cubic Lattice

2010/12/20 by V. Thanh Ngo, Ngo, V. Thanh, D. Tien Hoang +3
Physics and Astronomy · #FOS: Physical sciences #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech

paper · pdf · doi:10.48550/arxiv.1012.4251

submitted for publication

arxiv created 2010/12/20 · arxiv updated 2010/12/21

Abstract

The phase transition in frustrated spin systems is a fascinated subject in statistical physics. We show the result obtained by the Wang-Landau flat histogram Monte Carlo simulation on the phase transition in the fully frustrated simple cubic lattice with the Heisenberg spin model. The degeneracy of the ground state of this system is infinite with two continuous parameters. We find a clear first-order transition in contradiction with previous studies which have shown a second-order transition with unusual critical properties. The robustness of our calculations allows us to conclude this issue putting an end to the 20-year long uncertainty.

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