Antiferromagnetic sawtooth chain with Heisenberg and Ising bonds

Details Antiferromagnetic sawtooth chain with Heisenberg and Ising bonds Antiferromagnetic sawtooth chain with Heisenberg and Ising bonds

2009-05-29

arxiv.org/abs/0905.4776v4

Condensed Matter Physics, 12, pp. 343-351 (2009)

Physics

Condensed Matter

Statistical Mechanics

9 pages, 8 figures

Scientific paper

The sawtooth chain with pairs of $S=1/2$ spins interacting with $XXZ$-interactions placed on each second tooth is considered. All other interaction bonds are taken to be of Ising type. Exact statistical mechanical solution of the model within the direct transfer-matrix technique is obtained. The solution allows one to obtain exact analytic expressions for all thermodynamic functions of the model. Ground stated properties are also investigated, the corresponding ground state phase diagram is presented.

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