Chiral mixed phase in disordered 3d Heisenberg models

Details Chiral mixed phase in disordered 3d Heisenberg models Chiral mixed phase in disordered 3d Heisenberg models

2004-06-18

arxiv.org/abs/cond-mat/0406438v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, 4 figures, accepted in PRB Rapid Communications

Scientific paper

10.1103/PhysRevB.70.020405

Using Monte Carlo simulations, we compute the spin stiffness of a site-random 3d Heisenberg model with competing ferromagnetic and antiferromagnetic interactions. Our results for the pure limit yield values of the the critical temperature and the critical exponent $\nu$ in excellent agreement with previous high precision studies. In the disordered case, a mixed "chiral" phase is found which may be in the same universality class as 3d Heisenberg spin glasses.

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