The Random Transverse Ising Model with Spin-1/2, Spin-1 and Mixed Spins
B. Laaboudi, M. El Atri, M. Saber +1 more
Using the effective field theory (EFT) which takes into consideration the fluctuations of the effective field and which is based on a probability distribution of random variables which accounts for all the single kinematic relations, we have studied the transverse random field Ising model (TRIM) with spin-½ and spin-1 and the transverse random field mixed Ising model (TRMIM) with both spin-½ and spin-1. It is shown that the simplest approximation gives satisfactory results for the phase diagrams when compared with other methods.
physica status solidi (b)•Jul 1, 1998•7 citations