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Dynamic and Static Aspects in the Theory of Itinerant Spin Glasses
Author(s) -
Kolley E.,
Kolley W.
Publication year - 1985
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221320214
Subject(s) - statics , spin glass , replica , limit (mathematics) , replica trick , physics , supersymmetry , field (mathematics) , spin (aerodynamics) , langevin dynamics , condensed matter physics , statistical physics , glass transition , quantum mechanics , mathematics , thermodynamics , mathematical analysis , polymer , art , nuclear magnetic resonance , pure mathematics , visual arts
A superfield formulation of the Langevin dynamics for itinerant‐electron spin glasses is developed. Before taking the quenched configuration average the field‐theoretical scheme involves the supersymmetry. For comparison the standard replica method combined with Bogolyubov's variational principle is used to get the statics. The spin‐glass transition temperature is calculated in the presence of spatial fluctuations as well as in the mean‐field limit.