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A mean-field study of the temperature dependence of the layer magnetizations in a semi-infinite ising model

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Il Nuovo Cimento D

Summary

We present a mean-field study of the layer magnetization of a semi-infinite Ising model with intra-surfaceJ B and surface-bulkJ 1 interaction modified with respect to the bulk exchange interactionJ. This allows to discuss the extent of the spatial inhomogeneity perpendicular to a free surface. By following the magnetization of each layer, we are able to see how the critical exponents evolve from the bulk to the surface values. Furthermore, we introduce a new characteristic temperature,T em, where the surface magnetization departs from the bulk behaviour, as a possible candidate for the experimental determination ofJ 8 andJ 1.

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Authors and Affiliations

  1. Dipartimento di Fisica Teorica dell'Università, Strada Costiera 11, I-34014, Trieste, Italia

    M. Vendruscolo & M. Rovere

  2. Scuola Internazionale Superiore di Studi Avanzati, Via Beirut 4, I-34014, Trieste, Italia

    A. Fasolino

Authors
  1. M. Vendruscolo
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  2. A. Fasolino
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  3. M. Rovere
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Additional information

In honour of Prof. Fausto Fumi on the occasion of his retirement from teaching.

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Vendruscolo, M., Fasolino, A. & Rovere, M. A mean-field study of the temperature dependence of the layer magnetizations in a semi-infinite ising model. Il Nuovo Cimento D 15, 541–546 (1993). https://doi.org/10.1007/BF02456937

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  • DOI: https://doi.org/10.1007/BF02456937

PACS 75.30.Pd

PACS 75.10.Hk

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