Abstract
Optical reflection measurements within the highly conducting plane of the organic metal reveal the gradual development of a sharp feature at around 200 as the temperature is reduced below 150 K. Below this frequency a narrow Drude-like response is observed which accounts for the metallic behavior. Since de Haas–van Alphen oscillations at low temperatures confirm band structure calculations of bands crossing the Fermi energy, we assign the observed behavior to a two-dimensional metallic state in the proximity of a correlation induced metal-insulator transition.
- Received 25 August 2000
DOI:https://doi.org/10.1103/PhysRevB.62.R14673
©2000 American Physical Society