TY - JOUR
T1 - Monte Carlo evidence of non-equilibrium effects for ising model in a random field
AU - Stauffer, D.
AU - Hartzstein, C.
AU - Binder, K.
AU - Aharony, A.
PY - 1984/12
Y1 - 1984/12
N2 - Simulating an Ising model, up to sizes 150×150×150 in three and 225×225 in two dimensions, in a random field of strength ±H, we find a magnetization slowly decreasing with time if initially all spins are parallel. This decay is extremely slow for small random fields, so that a stable magnetization cannot be excluded. Below some "freezing" temperature, the system remains a single domain, with a finite magnetization in both two and three dimensions. If instead the system is cooled down in a constant random field, from temperatures above to temperatures below this freezing transition, then at the lower temperature the magnetization increases with time; this increase is very slow for large systems, with similar results in two and three dimensions.
AB - Simulating an Ising model, up to sizes 150×150×150 in three and 225×225 in two dimensions, in a random field of strength ±H, we find a magnetization slowly decreasing with time if initially all spins are parallel. This decay is extremely slow for small random fields, so that a stable magnetization cannot be excluded. Below some "freezing" temperature, the system remains a single domain, with a finite magnetization in both two and three dimensions. If instead the system is cooled down in a constant random field, from temperatures above to temperatures below this freezing transition, then at the lower temperature the magnetization increases with time; this increase is very slow for large systems, with similar results in two and three dimensions.
UR - http://www.scopus.com/inward/record.url?scp=2842530791&partnerID=8YFLogxK
U2 - 10.1007/BF01304084
DO - 10.1007/BF01304084
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AN - SCOPUS:2842530791
SN - 0722-3277
VL - 55
SP - 325
EP - 333
JO - Zeitschrift fur Physik B-Condensed Matter
JF - Zeitschrift fur Physik B-Condensed Matter
IS - 4
ER -