The ordering of XY spin glasses

Details The ordering of XY spin glasses The ordering of XY spin glasses

2011-02-17

arxiv.org/abs/1102.3496v1

J. Phys. Condens. Matt. 23, 164210 (2011)

Physics

Condensed Matter

Disordered Systems and Neural Networks

Scientific paper

Ordering properties of XY-like spin-glass magnets with an easy-plane magnetic anisotropy are studied based on a symmetry consideration and the results of recent numerical simulations on the pure Heisenberg and XY spin-glass models. The effects of an easy-plane-type uniaxial anisotropy, a random magnetic anisotropy and an applied magnetic field are investigated. In the XY regime in zero field, the "spin-chirality decoupling" persists even under the random magnetic anisotropy, escaping the "spin-chirality recoupling" phenomenon which inevitably occurs in the Heisenberg regime. Contrast between the scalar chiral order and the vector chiral order is emphasized. Implications to experiments are discussed.

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