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Haldane phase in the hubbard model at 2/3-filling for the organic molecular compound Mo3 S7 (dmit)3

By C. Janani, Merino J., I. P. McCulloch and B. J. Powell


We report the discovery of a correlated insulator with a bulk gap at 2/3 filling in a geometrically frustrated Hubbard model that describes the low-energy physics of Mo3S7(dmit)(3). This is very different from the Mott insulator expected at half-filling. We show that the insulating phase, which persists even for very weak electron-electron interactions (U), is adiabatically connected to the Haldane phase and is consistent with experiments on Mo3S7(dmit)(3)

Topics: Physics, Multidisciplinary, Physics
Publisher: American Physical Society
Year: 2014
OAI identifier: oai:espace.library.uq.edu.au:UQ:348975

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