Exact results of a mixed spin-12 and spin-S transverse Ising model with two- and four-spin interactions on the honeycomb lattice

Silvia Lacková, Tsuyoshi Horiguchi and Michal Jaščur

Physica A: Statistical Mechanics and its Applications, 2003, vol. 326, issue 1, 189-202

Abstract: A mixed spin-12 and spin-S transverse Ising model with two- and four-spin interactions on the honeycomb lattice is studied using a generalized mapping transformation technique. The exact expressions for the critical temperature, the magnetization, the correlation functions, the internal energy and other thermodynamic quantities are obtained. The phase diagram is obtained as a function of the interaction parameter or the transverse field.

Keywords: Transverse field; Quantum Ising model with mixed spins; Multispin interactions; Exact solution (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:326:y:2003:i:1:p:189-202

DOI: 10.1016/S0378-4371(03)00258-9

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