Magneto-thermal properties of the spin-s Heisenberg antiferromagnet on the cuboctahedron

Details Magneto-thermal properties of the spin-s Heisenberg antiferromagnet on the cuboctahedron Magneto-thermal properties of the spin-s Heisenberg antiferromagnet on the cuboctahedron

2008-09-25

arxiv.org/abs/0809.4414v1

J. Phys.: Conf. Ser. 145 (2009) 012082

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages including 10 PostScript files; to appear in Journal of Physics: Conference Series (proceedings of HFM2008)

Scientific paper

10.1088/1742-6596/145/1/012082

We use the example of the cuboctahedron, a highly frustrated molecule with 12 sites, to study the approach to the classical limit. We compute magnetic susceptibility, specific heat, and magnetic cooling rate at high magnetic fields and low temperatures for different spin quantum numbers s. Remarkably big deviations of these quantities from their classical counterparts are observed even for values of s which are usually considered to be almost classical.

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