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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2005

Numerical study of the ordering of the +-J XY spin-glass ladder

Résumé

The properties of the domain-wall energy and of the correlation length are studied numerically for the one-dimensional +-J XY spin glass on the two-leg ladder lattice, focusing on both the spin and the chirality degrees of freedom. Analytic results obtained by Ney-Niftle et al for the same model were confirmed for asymptotically large lattices, while the approach to the asymptotic limit is slow and sometimes even non-monotonic. Attention is called to the occurrence of the SO(2)-Z_2 decoupling and its masking in spin correlations, the latter reflecting the inequality between the SO(2) and Z_2 exponents. Discussion is given concerning the behaviors of the higher-dimensional models.

Dates et versions

hal-00102645 , version 1 (02-10-2006)

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Tsukasa Uda, Hajime Yoshino, Hikaru Kawamura. Numerical study of the ordering of the +-J XY spin-glass ladder. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2005, 72, pp.024442. ⟨hal-00102645⟩
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