Classical frustration and quantum disorder in spin-orbital models
J. Zaanen, L. F. Feiner, A. M. Oles
Abstract
The most elementary of all physical spin-orbital models is the Kugel-Khomskii model describing a S=1/2, eg degenerate Mott-insulator. Recent theoretical work is reviewed revealing that the classical limit is characterized by a point of perfect dynamical frustration. It is suggested that this might give rise to a quantum disordered ground state.
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