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The European Physical Journal B

Thermodynamic properties of an alternating-spin (1/2,1) two-leg ladder

X. Y. Chen, Qing Jiang, Wen Zhong Shen

Published Jan 1, 2003• 1 citation
Publisher
DOI
10.1140/epjb/e2004-00043-y

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Thermodynamic properties of spin=1/2 two-leg ladders with alternating chains including ferromagnetic and antiferromagnetic interactions are discussed on the basis of the numerical results obtained by quantum Monte Carlo simulations. As well as the role of exchange interaction of rungs, the essential role of the bond alternation in the chain on ladder systems is investigated in connection with the appearance of characteristic properties in magnetic susceptibilities and heat capacities. Furthermore, quantum effects on the ground-state energy are obtained. On the basis of calculated results, the relationship between singlet dimer phases and Haldane states is discussed.