Disorder-driven magnetic field-dependent phases in an organic conductor

Details Disorder-driven magnetic field-dependent phases in an organic conductor Disorder-driven magnetic field-dependent phases in an organic conductor

2002-04-16

arxiv.org/abs/cond-mat/0204350v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages typset, 5 figures

Scientific paper

We report inter-plane ($R_{zz}$) electrical transport measurements in the \tp series of organic conductors at very high magnetic fields. In the field range between 36 and 60 T $R_{zz}$ shows a very hysteretic first order phase transition from metallic to an insulating state. This transition does not affect the Shubnikov-de-Haas oscillations associated with the two-dimensional (2D) Fermi surface. We argue that this transition originates from inter-plane disorder which gives rise to incoherent transport along the least conducting axis. We conclude that this system becomes a strictly 2D Fermi-liquid at high magnetic fields.

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