2000/06/30 by P. Haas, Erika Griesshaber, E. Griesshaber +9 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Magnetism in coordination complexes #N-Heterocyclic Carbenes in Organic and Inorganic Chemistry #Organic and Molecular Conductors Research #cond-mat
paper · pdf · doi:10.1103/physrevb.62.r14673
published as Physical Review B - Rapid Communication {\bf 62}, 14673 (2000) · 4 pages, 2 figures
openalex publication_date 2000/12/01 · arxiv created 2001/04/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Optical reflection measurements within the highly conducting (a,b) plane of the organic metal (BEDT\ensuremath-TTF)4[Ni(dto)2] reveal the gradual development of a sharp feature at around 200 cm^\mathrm\ensuremath-1 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.