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Magnetic-Field-Induced Mott Transition in a Quasi-Two-Dimensional Organic Conductor

2004/09/15 by Fumitaka Kagawa, F. Kagawa, T. Itou +4
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Chemistry #Condensed matter physics #Conductor #Field (mathematics) #Hubbard model #Magnetic field #Magnetism in coordination complexes #Materials science #Metal #Metal–insulator transition #Mott insulator #Mott transition #Organic and Molecular Conductors Research #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum mechanics #Superconductivity #Transition metal #Transition temperature #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.93.127001

published as Phys. Rev. Lett. 93, 127001 (2004) · 4 pages, 4 figures

openalex publication_date 2004/09/15 · arxiv created 2004/09/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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, \ensuremathκ\mathrm\text\ensuremath-(BEDT\mathrm\text\ensuremath-TTF)2Cu[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.

Citations