Some Magnetic Properties of the Amorphous Transverse Spin-1/2 Ising System

The amorphous spin-1/2 Ising system with a transverse field is investigated by the use of the effective field theory based on the probability distribution technique, which accounts for the self spin correlation functions. We use the stochastic lattice model to describe the structural disorder. Results for the hysteresis loops, the transverse and longitudinal magnetizations, and susceptibilities are presented for a simple cubic lattice. Due to the fluctuations of the exchange interactions and the applied transverse field, a number of interesting phenomena are found in these quantities.