Quantum Magnets with Anisotropic Infinite Range Random Interactions

Liliana Arrachea; Marcelo J. Rozenberg

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Quantum Magnets with Anisotropic Infinite Range Random Interactions

Liliana Arrachea·Marcelo J. Rozenberg

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Abstract

Using exact diagonalization techniques we study the dynamical response of the anisotropic disordered Heisenberg model for systems of S=1/2 spins with infinite range random exchange interactions at temperature T=0. The model can be considered as a generalization, to the quantum case, of the well known Sherrington-Kirkpatrick classical spin-glass model. We also compute and study the behavior of the Edwards Anderson order parameter and energy per spin as the anisotropy evolves from the Ising to the Heisenberg limits.

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BibTeX RIS

Liliana Arrachea, Marcelo J. Rozenberg. 2004-12-22. Quantum Magnets with Anisotropic Infinite Range Random Interactions. https://arxiv.org/abs/cond-mat/0412632

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