Chiral mixed phase in disordered 3d Heisenberg models

Abstract

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.

5 pages, 4 figures, accepted in PRB Rapid Communications

References in corpus (7)

• Critical exponents and equation of state of the three-dimensional Heisenberg universality class
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Cited by in corpus (2)

• Random Fan-Out State Induced by Site-Random Interlayer Couplings
• Double-$q$ Order in a Frustrated Random Spin System