Abstract
The organic charge-transfer salt is a quasi-two-dimensional metal with a half-filled conduction band at ambient conditions. When cooled below , it undergoes a pronounced transition to an insulating phase where the resistivity increases many orders of magnitude. In order to elucidate the nature of this metal-insulator transition, we have performed comprehensive transport, dielectric and optical investigations. The findings are compared with other dimerized salts, in particular the Cl analog, where a charge-order transition takes place at .
- Received 13 June 2017
DOI:https://doi.org/10.1103/PhysRevB.96.085116
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