TDAE-\c60: Can a Mott insulator be a ferromagnet?

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dc.creatorArovas, Daniel P.
dc.creatorAuerbach, Assa
dc.date1995-06-07
dc.date.accessioned2026-07-07T03:07:44Z
dc.date.available2026-07-07T03:07:44Z
dc.descriptionMotivated 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 phase. We explore its phase diagram and identify points of special interest: an SU(4) antiferromagnet (solved by Sutherland) and two ferromagnet$\otimes$antiferromagnet points where the ground state is known. For the ferromagnetic regime, we apply interchain mean field theory and derive an expression for the Curie temperature where spin ordering occurs and a lower Ne{é}l temperature for a conjectured isospin ordering.
dc.descriptionRevtex, 4 pages, 1 figure in latex. Short version
dc.identifierhttps://arxiv.org/abs/cond-mat/9506031
dc.identifierhttp://arxiv.org/abs/cond-mat/9506031
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27287
dc.subjectCondensed Matter
dc.titleTDAE-\c60: Can a Mott insulator be a ferromagnet?
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