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Finite Temperature Properties of the Mixed Diamond Chain with Spins 1 and 1/2 by Hida, Kazuo; Takano, Ken'ichi; Suzuki, Hidenori is a scholarly article available to read on EtoBox.

What is Finite Temperature Properties of the Mixed Diamond Chain with Spins 1 and 1/2 about?

We formulate statistical mechanics for the mixed diamond chain with spins of magnitudes 1 and 1/2. Owing to a series of conservation laws, any eigenstate of this system is decomposed into eigenstates of finite odd-length spin-1 chains. The ground state undergoes five quantum phase transitions with varying the parameter $\lambda$ controlling frustration. We obtain the values of the residual entropy and the Curie constant which characterize each phase and phase boundary at low temperatures. We further find various characteristic finite-temperature properties such as the nonmonotonic temperature dependence of the magnetic susceptibility, the multipeak structure in the $\lambda$-dependence of entropy, the plateau-like temperature dependence of entropy and the multipeak structure of specific heat.

Author

Hida, Kazuo; Takano, Ken'ichi; Suzuki, Hidenori

Published

2009

Language

EN