Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Acta Physica Sinica

STUDY OF SURFACE MAGNETISM IN A SEMI-INFINITE ISING FERROMAGNETIC SYSTEM

JIANG QIN, Zhenya Li, 苏州大学物理系

Published Jan 1, 1989• 1 citation
Publisher

Abstract

We use the mean field renormalization group method to treat the semi-infinite Ising ferromagnetic system with the amorphization of the surface. The critical behavior of the surface with a surface random field, including critical temperature, the possibility of tricritical and reentrant phenomena, are investigated in detail.
DOI
10.7498/aps.38.1062

Related papers

CRITICAL BEHAVIOR AT THE SURFACE OF A SEMI INFINITE MIXED SPIN ISING SYSTEM WITH SURFACE RANDOM FIELD

GAO ZHAN, Zhenlin Wang, XU JIAN-HONG +1 more

In this paper,a renormalization group scheme within the framework of the mean field theory is used to investigate the critical behavior at the surface of a semi infinite Ising system with mixed spins,i.e.S=1 at the surface and σ=1/2 in the bulk.The effects of a random field on the surface phase diagrams are obtained.

Acta Physica Sinica•Jan 1, 1997•1 citation

Mean-field renormalization-group approaches to the surface on a semi-infinite Ising model with a random surface field

Gang Sun

We study the critical behavior of the surface on a semi-infinite simple-cubic-lattice Ising model with a bimodal random surface field by a large-cell mean-field renormalization-group method. Our results show that a surface ferromagnetic phase exists at weak random fields above the bulk critical temperature, and no signs of the tricritical point are found until the surface critical temperature decreases to that of the bulk.

Physical review. B, Condensed matter•Feb 1, 1995•1 citation

Numerical Calculations for the Surface on a Semi-Infinite Ising Model with a Random Surface Field

Gang Sun, Jie Yang

We study the critical behavior of the surface on a semi-infinite simple cubic lattice Ising model with a bimodal random surface field by large cell mean-field renormalization group method and Monte Carlo simulations. Our results show that the surface ferromagnetic phase exists in the weak random field range above the bulk critical temperature. The surface specific heat is not divergence and the susceptibility show a cusp singularity at the surface ferromagnetic-paramagnetic transition for a relatively large random field.

Communications in Theoretical Physics•Jan 30, 1995•1 citation

Phase Diagram of the Semi-Infinite Ising Model in a Random Field

A.S. de Arruda, W. Figueiredo

We determine the phase diagram of the semi-infinite Ising model in a cubic lattice with a trimodal distribution of random fields on the surface. We use the mean-field renormalization group with the smallest possible clusters to show that a very small dilution of the random field at surface is sufficient to destroy the tricritical behavior.

Modern Physics Letters B•Sep 20, 1997•12 citations

Field dependences of surface magnetization in a semi-infinite Ising model with a nonrandom surface or surface amorphization

T. Kaneyoshi

Field dependences of surface magnetization in the semi-infinite spin-1/2 Ising ferromagnet with a nonrandom surface or surface amorphization are investigated by the use of the effective-field theory corresponding to the Zernike approximation in the bulk. We find that the system behaves in a variety of notable ways for both the random and the uniform models.

Physical review. B, Condensed matter•Jun 1, 1989•8 citations

Mean Field Renormalization Group for Site‐Bond Diluted Ising Ferromagnets

C. Z. Yang, Z. Y. Li

Abstract It is shown that the mean field renormalization group techniques provide a reasonable description of the critical behaviour of the site‐bond diluted Ising model, both in the two‐dimensional system and the surface of a semi‐infinite three‐dimensional system.

physica status solidi (b)•Mar 1, 1988•12 citations
We study the critical behavior of the surface on a semi-infinite simple cubic lattice Ising model with a bimodal random surface field by large cell mean-field renormalization group method and Monte Carlo simulations. Our results show that the surface ferromagnetic phase exists in the weak random field range above the bulk critical temperature. The surface specific heat is not divergence and the susceptibility show a cusp singularity at the surface ferromagnetic-paramagnetic transition for a relatively large random field.