Magnetocaloric effect in two-dimensional spin-1/2 antiferromagnets

Details Magnetocaloric effect in two-dimensional spin-1/2 antiferromagnets Magnetocaloric effect in two-dimensional spin-1/2 antiferromagnets

2005-08-04

arxiv.org/abs/cond-mat/0508123v1

Physica B378-380 (2006) 1098-1099

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 2 figures included, to appear in Physica B (proceedings of SCES'05)

Scientific paper

10.1016/j.physb.2006.01.436

The magnetocaloric effect is studied at the transition to saturation in the antiferromagnetic spin-1/2 Heisenberg model on the simplest two-dimensional lattices, namely the square and the triangular lattice. Numerical results are presented for the entropy which are consistent with identical universal properties. However, the absolute values of the entropy are bigger on the geometrically frustrated triangular lattice than on the non-frustrated square lattice, indicating that frustration improves the magnetocaloric properties.

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