Existence of a New Quantum Phase in Exactly Solvable Antiferromagnetic Ising-Heisenberg Models on Planar Lattices

Details Existence of a New Quantum Phase in Exactly Solvable Antiferromagnetic Ising-Heisenberg Models on Planar Lattices Existence of a New Quantum Phase in Exactly Solvable Antiferromagnetic Ising-Heisenberg Models on Planar Lattices

2002-07-22

arxiv.org/abs/cond-mat/0207520v1

Acta Electrotechnica et Informatica 2 (2002) 71-75

Physics

Condensed Matter

Statistical Mechanics

5 pages, 6 Figures, to be published in Acta Electronica et Informatica (2002)

Scientific paper

In this work we deal with doubly decorated Ising-Heisenberg models on planar lattices. Applying the generalized decoration-iteration transformation we obtain exact results for the antiferromagnetic version of the model. The existence of a new quantum dimerized phase is predicted and its physical properties are studied and analyzed. Particular attention has been paid to the investigation of the phase boundaries, pair-correlation functions and specific heat. A possible application of the present work to some molecular magnets is also drawn.

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