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Condensed Matter Physics

ON THE CRITICAL BEHAVIOUR OF RANDOM ANISOTROPY MAGNETS: CUBIC ANISOTROPY

M. Dudka, Folk, Yurij V. Holovatch

Published Jan 1, 2001• 10 citations
Publisher

Abstract

The critical behaviour of an m -vector model with a local anisotropy axis of random orientation is studied within the field-theoretical renormalization group approach for cubic distribution of anisotropy axis.Expressions for the renormalization group functions are calculated up to the two-loop order and investigated both by an ε = 4 -d expansion and directly at space dimension d = 3 by means of the Pad é-Borel resummation.One accessible stable fixed point indicating a 2nd order ferromagnetic phase transition with dilute Ising-like critical exponents is obtained.

DOI
10.5488/cmp.4.3.459

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