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arXiv · 1409.4965

Mottness in a doped organic superconductor

H. Oike·K. Miyagawa·H. Taniguchi·K. Kanoda
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Abstract

We report the pressure study of a doped organic superconductor with Hall coefficient and conductivity measurements. We find that maximally enhanced superconductivity and a non-Fermi liquid appear around a certain pressure where mobile carriers increase critically, suggesting a possible quantum phase transition between strongly and weakly correlated regimes. Our description extends the conventional picture of a Mott metal-insulator transition at half filling to the case of a doped Mott insulator with tunable correlation.

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H. Oike, K. Miyagawa, H. Taniguchi, K. Kanoda. 2014-09-17. Mottness in a doped organic superconductor. https://doi.org/10.1103/physrevlett.114.067002

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