Green function theory of a semi‐infinite ising ferromagnet in a transverse field
B. A. Shiwai, Michael G Cottam
Abstract A Green function equation‐of‐motion method is employed to calculate the dynamic properties of a semi‐infinite spin system (or pseudo‐spin system) described by the Ising model in a transverse field. The excitations of the system are shown to be the bulk and surface spin waves, and the Green functions are employed to evaluate their spectral intensities and integrated power factors at temperatures above the transition temperature Tc. Some numerical examples are also included.
physica status solidi (b)•Apr 1, 1986•9 citations