Transverse freezing in the infinite-range quantum Ising spin glass with transverse and Gaussian random longitudinal fields
Yu‐qiang Ma, Zhen‐Ya Li, Chang-De Gong
The infinite-range quantum Ising spin glass in a transverse and a Gaussian random field has been studied by combining the pair approximation with the discretized path-integral representation. The phase diagrams are obtained, and the possibilities of the existence of a mixed phase in which ferromagnetism and spin-glass order coexist are discussed. This is expected to interpret some properties of the mixed hydrogen-bonded ferroelectric and antiferroelectric crystals such as Rb 1-x (NH) 4x H 2 PO.
Journal of Physics Condensed Matter•Jun 24, 1991•9 citations