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Phase Diagrams of a Transverse Ising Multilayer System with a Higher Spin Value
Author(s) -
Kaneyoshi T.
Publication year - 2000
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 - 10.1002/1521-3951(200006)219:2<365::aid-pssb365>3.0.co;2-f
Subject(s) - condensed matter physics , ising model , phase diagram , transverse field , ferroelectricity , transverse plane , spin (aerodynamics) , slab , physics , phase transition , phase (matter) , materials science , thermodynamics , quantum mechanics , structural engineering , engineering , geophysics , dielectric
The critical properties of a ferroelectric multilayer system consisting of two alternating different pseudo spin‐1/2 and spin‐ S ( S ≥ 1/2) ferroelectric slabs with the same thickness L are discussed by the use of the spin‐ S transverse Ising model. The behavior of the transition temperature T c and the critical transverse field Ω c is examined as a function of the inter‐slab interaction R numerically, selecting the two values of L and S , namely L = 1, 2 and S = 1/2, 1. We have found many characteristic phenomena in the systems, such as double values of T c in a certain region of R , when the values of R and Ω are selected as large values.