Two coupled Ising planes: Phase diagram and interplanar force
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The statistical mechanics of two Ising ferromagnetic planes coupled by a local interlayer two-spin interaction have been studied by means of a variety of calculational methods, including different mean-field approximations, Migdal-Kadanoff-type renormalization-group techniques, scaling theory, as well as numerical Monte Carlo simulation techniques. The phase diagram has been derived as a function of the interlayer coupling strength. Furthermore, various thermodynamic variables have been determined, including the interlayer correlation function, which is proportional to the interplanar force. It is found that a Migdal-Kadanoff renormalization with a decimation procedure which involves the interlayer coupling in an appropriate fashion provides an accurate description of the phase diagram and that a mean-field description provides a good description of the phase diagram and the interplanar force, except for very low interlayer coupling strengths.
Originalsprog | Engelsk |
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Tidsskrift | Journal of Statistical Physics |
Vol/bind | 73 |
Udgave nummer | 3-4 |
Sider (fra-til) | 723-749 |
Antal sider | 27 |
ISSN | 0022-4715 |
DOI | |
Status | Udgivet - 1993 |
Eksternt udgivet | Ja |
ID: 236890238