Thermodynamics of finite magnetic two-level systems

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We use Monte Carlo simulations to investigate the thermodynamical behaviour of aggregates consisting of few superparamagnetic particles in a colloidal suspension. The potential energy surface of this classical two-level system with a stable and a metastable `ring' and `chain' configuration is tunable by an external magnetic field and temperature. We determine the complex `phase diagram' of this intriguing system and analyze thermodynamically the nature of the transition between the ring and the chain `phase'.
4 pages, 3 PostScript figures, uses REVTEX, a PostScript version including the 3 figures in high quality is available at http://www.physik.uni-oldenburg.de/documents/UOL-THEO3-96-2/

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/27454

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9601138
 http://arxiv.org/abs/cond-mat/9601138

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arXiv