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Phase Transition of a Ferromagnetic Ising Superlattice in a Transverse Field
Author(s) -
Wu Yinzhong,
Zhong Jialin
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221900228
Subject(s) - condensed matter physics , ising model , superlattice , ferromagnetism , magnetism , transverse field , phase diagram , phase transition , physics , field (mathematics) , coupling (piping) , materials science , phase (matter) , quantum mechanics , mathematics , pure mathematics , metallurgy
Using the effective‐field theory with corrections, the critical behavior of a magnetic superlattice consisting of two different ferromagnets is examined in a spin‐1 transverse Ising model. The dependence of the critical temperature on the thickness of the constituents in a unit cell is investigated for different cases. A critical value of the interface exchange coupling ( J ab ) c above which the interface magnetism appears is found, and the effect of the transvcrsc field on ( J ab ) c is also investigated. All the results are understandable by phase diagrams.