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Physical review. B, Condensed matter

Surface thermodynamic properties of a semi-infinite Ising ferromagnet in the presence of a surface transverse field

Qing Jiang, Zhen‐Ya Li

Published Mar 1, 1991• 18 citations
Publisher

Abstract

By use of a combination of the two-spin cluster approximation with the discretized path-integral representation, the surface phase diagrams and surface thermodynamic quantities, such as free energy, specific heat, and susceptibility, of a semi-infinite Ising ferromagnet in the presence of a surface transverse field are investigated.
DOI
10.1103/physrevb.43.6198

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Communications in Theoretical Physics•Jan 30, 1995•1 citation
The effect of surface and bulk transverse fields on the phase transitions of a semi-infinite spin-1 ferromagnetic Ising model is investigated within a finite cluster approximation with an expansion technique for cluster identities of spin-1 localized spin systems. The phase diagrams are determined as a function of the ratio of bulk and surface transverse fields, the temperature and the transverse field of the surface. They show that the systems exhibit a variety of phase transitions. A dead layer is also obtained in a special region of space parameters.
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