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

Lev Mikheev
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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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Lev Mikheev. 1995-03-27. Critical phenomena in superlattices: Reentrant dimensional crossover and anomalous critical amplitudes. https://arxiv.org/abs/cond-mat/9503134

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