Chiral-glass transition and replica symmetry breaking of a three-dimensional Heisenberg spin glass
Condensed Matter - Disordered Systems and Neural Networks
arxiv: Condensed Matter::Strongly Correlated Electrons | Condensed Matter::Disordered Systems and Neural Networks | Condensed Matter::Soft Condensed Matter
Extensive equilibrium Monte Carlo simulations are performed for a three-dimensional Heisenberg spin glass with the nearest-neighbor Gaussian coupling to investigate its spin-glass and chiral-glass orderings. The occurrence of a finite-temperature chiral-glass transition without the conventional spin-glass order is established. Critical exponents characterizing the transition are different from those of the standard Ising spin glass. The calculated overlap distribution suggests the appearance of a peculiar type of replica-symmetry breaking in the chiral-glass ordered state.