Using Lanczos exact diagonalization of finite clusters we demonstrate that
the spin-orbital d1 model for triply degenerate t2g orbitals on a
triangular lattice provides an example of a spin-orbital liquid ground state.
We also show that the spin-orbital liquid involves entangled valence bond
states which violate the Goodenough-Kanamori rules, and modify effective spin
exchange constants.Comment: 4 pages, 2 figures, presented at Euroconference Physics of Magnetism
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