Absence of an Almeida-Thouless line in three-dimensional spin glasses

We present results of Monte Carlo simulations of the three-dimensional Edwards-Anderson Ising spin glass in the presence of a (random) field. A finite-size scaling analysis of the correlation length shows no indication of a transition, in contrast with the zero-field case. This suggests that there i...

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Veröffentlicht in:	Physical review letters 2004-11, Vol.93 (20), p.207203.1-207203.4, Article 207203
Hauptverfasser:	YOUNG, A. P, KATZGRABER, Helmut G
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology General theory and models of magnetic ordering Magnetic properties and materials Physics Spin-glass and other random models
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Zusammenfassung:	We present results of Monte Carlo simulations of the three-dimensional Edwards-Anderson Ising spin glass in the presence of a (random) field. A finite-size scaling analysis of the correlation length shows no indication of a transition, in contrast with the zero-field case. This suggests that there is no Almeida-Thouless line for short-range Ising spin glasses.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.93.207203