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cond-mat1995
TDAE-\c60: Can a Mott insulator be a ferromagnet?
Daniel P. Arovas, Assa Auerbach
Motivated by the structure of TDAE-\c60, we derive a multicomponent superexchange Hamiltonian for the spins and orbital (``isospin'') degrees of freedom in the Mott-insulating phas…
cond-mat1993
The Semiclassical Expansion of the t-J model
Assa Auerbach
The Semiclassical Expansion of the t-J model. Lectures in the Jerusalem Winter School on Strongly Correlated Electrons, Dec. 1991, by Assa Auerbach, Physics Dept., Technion, Israel…