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High magnetic field-induced insulating phase in an organic conductor

J. S. Brooks, D. Graf, E. S. Choi, L. Balicas, K. Storr, C. H. Mielke, G. C. Papavassiliou

cond-matarXiv:cond-mat/0209592

Abstract

We report electrical transport, skin depth, and magnetocaloric measurements in the tau-series of organic conductors at very high magnetic fields. Above 36 T these materials show a magnetic field induced first order phase transition from a metallic to an insulating state. The transition, which is a bulk thermodynamic phenomenon, does not follow the conventional prescription for field induced phase transitions in organic conductors.

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