Phase Transition in Heisenberg Fully Frustrated Simple Cubic Lattice

Details Phase Transition in Heisenberg Fully Frustrated Simple Cubic Lattice Phase Transition in Heisenberg Fully Frustrated Simple Cubic Lattice

2010-12-20

arxiv.org/abs/1012.4251v1

Physics

Condensed Matter

Statistical Mechanics

submitted for publication

Scientific paper

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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