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Phys Rev Lett. 2004 Sep 17;93(12):127001. Epub 2004 Sep 15.

Magnetic-field-induced Mott transition in a quasi-two-dimensional organic conductor.

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1
Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan.

Abstract

We investigated the effect of magnetic field on the highly correlated metal near the Mott transition in the quasi-two-dimensional layered organic conductor, kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl, by the resistance measurements under control of temperature, pressure, and magnetic field. It was demonstrated that the marginal metallic phase near the Mott transition is susceptible to the field-induced localization transition of the first order, as was predicted theoretically. The thermodynamic consideration of the present results gives a conceptual pressure-field phase diagram of the Mott transition at low temperatures.

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