Ising spin-glass transition in a magnetic field outside the limit of validity of mean-field theory.
Phys Rev Lett
; 103(26): 267201, 2009 Dec 31.
Article
in En
| MEDLINE
| ID: mdl-20366338
ABSTRACT
The spin-glass transition in a magnetic field is studied both in and out of the limit of validity of mean-field theory on a diluted one dimensional chain of Ising spins where exchange bonds occur with a probability decaying as the inverse power of the distance. Varying the power in this long-range model corresponds, in a one-to-one relationship, to changing the dimension in spin-glass short-range models. Evidence for a spin-glass transition in a magnetic field is found also for systems whose equivalent dimension is below the upper critical dimension in a zero magnetic field.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2009
Type:
Article
Affiliation country:
Italy