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Paper detail

Compass model on a ladder and square clusters

We obtained exact heat capacities of the quantum compass model on the square L x L clusters with L=2,3,4,5 using Kernel Polynomial Method and compare them with heat capacity of a large compass ladder. Intersite correlations found in the ground state for these systems demonstrate that the quantum compass model differs from its classical version.

preprint2009arXivOpen access
Wojciech BrzezickiAndrzej M. Oles
cond-mat.str-el
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Wojciech BrzezickiAndrzej M. Oles

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