Rigorous criterion for reentrance in the spin-1/2 Ising-Heisenberg model on diamond-like decorated Bethe lattices

Details Rigorous criterion for reentrance in the spin-1/2 Ising-Heisenberg model on diamond-like decorated Bethe lattices Rigorous criterion for reentrance in the spin-1/2 Ising-Heisenberg model on diamond-like decorated Bethe lattices

2010-07-12

arxiv.org/abs/1007.1873v1

Acta Phys. Pol. A 118 (2010) 725

Physics

Condensed Matter

Statistical Mechanics

6 pages, 3 figures, presented at 14th Czech and Slovak Conference on Magnetism 6.-9. July 2010, Kosice, Slovakia

Scientific paper

The spin-1/2 Ising-Heisenberg model on diamond-like decorated Bethe lattices
is exactly solved with the help of decoration-iteration transformation and
exact recursion relations. It is shown that the model under investigation
exhibits reentrant phase transitions whenever a sufficiently high coordination
number of the underlying Bethe lattice is considered.

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