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Phase diagrams of the spin‐1/2 transverse ising model with random interactions
Author(s) -
El Mir E.,
Saber M.
Publication year - 1994
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.2221830120
Subject(s) - ising model , phase diagram , transverse field , transverse plane , lattice (music) , physics , statistical physics , condensed matter physics , simple (philosophy) , spin (aerodynamics) , mean field theory , square lattice ising model , phase (matter) , quantum mechanics , thermodynamics , engineering , philosophy , structural engineering , epistemology , acoustics
The phase diagrams of the spin‐1/2 transverse Ising model with random interactions are investigated within the framework of the effective field theory using an improved configurational averaging procedure. General formulae, applicable to lattices with coordination number z , are given. Numerical results are presented for a simple cubic lattice. It is found that the effects of a transverse field on the phase diagrams exhibit a number of interesting phenomena.