Phase transitions in the spin-1/2 Ising superlattice with a transverse field

The phase transitions of a ferromagnet spin-1/2 Ising superlattice consisti ng of two different materials in a transverse field is examined with the us e of the effective field theory that accounts for the self-spin function co rrelation. The critical temperature of the system is studied as a function of the thickness of the constituents in a unit cell and of exchange interac tions in each material. A critical interface exchange interaction above whi ch the interface magnetism appears is found. The effects of a uniform trans verse field and the interface exchange interaction on the parameters of the system are also investigated. (C) 1999 Elsevier Science B.V. All rights re served.