Two coupled Ising planes: Phase diagram and interplanar force
| Autor: | Jesper Lemmich, Per Lyngs Hansen, John Hjort Ipsen, Ole G. Mouritsen |
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| Rok vydání: | 1993 |
| Předmět: |
Physics
Phase transition Condensed matter physics Monte Carlo method Statistical and Nonlinear Physics Statistical mechanics Renormalization group Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Correlation function Mean field theory Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Ising model Mathematical Physics Phase diagram |
| Zdroj: | Journal of Statistical Physics. 73:723-749 |
| ISSN: | 1572-9613 0022-4715 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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