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Magnetic properties of a transverse spin‐ $ {3 \over 2} $ Ising model with random longitudinal field
Author(s) -
Liang YaQiu,
Wei GuoZhu,
Song GuoLi
Publication year - 2004
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.200402088
Subject(s) - condensed matter physics , transverse plane , ising model , tricritical point , physics , phase diagram , transverse field , longitudinal field , lattice (music) , effective field theory , magnetic field , phase (matter) , quantum mechanics , engineering , structural engineering , acoustics
Within the framework of the effective‐field theory with correlations, a spin‐ $ {3 \over 2} $ transverse Ising model in the longitudinal random‐field on a honeycomb lattice is studied. The phase diagrams and the behavior of the tricritical point are examined. The possible re‐entrance phenomena displayed by the system due to the competition effects that occur for the appropriate ranges of the random and transverse field are investigated. The longitudinal and transverse magnetizations, the longitudinal quadrupolar moments and internal energy are given numerically for a honeycomb lattice ( z = 3). (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)