A MEAN-FIELD STUDY OF THE TEMPERATURE-DEPENDENCE OF THE LAYER MAGNETIZATIONS IN A SEMIINFINITE ISING-MODEL

Authors
VENDRUSCOLO M FASOLINO A ROVERE M
Citation
M. Vendruscolo et al., A MEAN-FIELD STUDY OF THE TEMPERATURE-DEPENDENCE OF THE LAYER MAGNETIZATIONS IN A SEMIINFINITE ISING-MODEL, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 15(2-3), 1993, pp. 541-546
Citations number
12
Categorie Soggetti
Physics
Journal title
Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics → ACNP
ISSN journal
03926737
Volume
15
Issue
2-3
Year of publication
1993
Pages
541 - 546
Database
ISI
SICI code
0392-6737(1993)15:2-3<541:AMSOTT>2.0.ZU;2-4
Abstract
We present a mean-field study of the layer magnetizations of a semi-in finite Ising model with intra-surface J(s) and surface-bulk J1 interac tion modified with respect to the bulk exchange interaction J. This al lows to discuss the extent of the spatial inhomogeneity perpendicular to a free surface. By following the magnetization of each layer, we ar e able to see how the critical exponents evolve from the bulk to the s urface values. Furthermore, we introduce a new characteristic temperat ure, T(em), where the surface magnetization departs from the bulk beha viour, as a possible candidate for the experimental determination of J (s) and J1.