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; Yu-qiang Ma; Dept. of Phys., Nanjing Univ., China; Zhen-ya Li; Dept. of Phys., Nanjing Univ., China; Chang-de Gong; Dept. of Phys., Nanjing Univ., China
Журнал:
Journal of Physics: Condensed Matter
Дата:
1991-06-24
Аннотация:
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<sub>1-x</sub>(NH)<sub>4x</sub>H<sub>2</sub>PO.
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