Critical phenomena in superlattices: Reentrant dimensional crossover and anomalous critical amplitudes

1995/03/27 by Lev Mikheev, Mikheev, Lev
Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #cond-mat

paper · pdf · doi:10.48550/arxiv.cond-mat/9503134

31 pages + 4 figures; REVTeX 3.1

arxiv created 1995/03/27 · arxiv updated 2009/11/30

Abstract

A crossover from d to d-1, and then back to d-dimensional critical behavior is argued to be a generic feature characterizing ordering in a d-dimensional superlattice composed of atomically \em thick films of two ferromagnets. The crossover leads to anomalous changes in the amplitudes of critical singularities. In d=3 Heisenberg and XY superlattices large scale critical fluctuations persist over a wide temperature range.

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