Quantum site-random XY spin glasses in a random field

Yu-qiang Ma

Physica A: Statistical Mechanics and its Applications, 1997, vol. 245, issue 3, 231-237

Abstract: A quantum spherical version of the site-random XY model in the presence of random field is presented in the boson space. In the phase diagram drawn as a function of the strength of random field, we find that the ferromagnetic and spin-glass phases are reduced by quantum fluctuations and destroyed completely by random-field fluctuations with sufficiently large values of the random-field variance.

Keywords: Phase transitions; Disordered system (search for similar items in EconPapers)
Date: 1997
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:245:y:1997:i:3:p:231-237

DOI: 10.1016/S0378-4371(97)00321-X

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