In-plane quasi-isotropic organic superconductor di[bis(ethylenedithiolo) tetrathiafulvalene] bis(isothiocyanato) cuprate (I), (BEDT-TTF) [Cu(NCS)2]2: Polarized reflectance spectra
Tadashi Sugano, Hakuro Hayashi, Hiroshi Takenouchi, Koichi Nishikida, Hatsumi Urayama, Hideki Yamochi, Gunzi Saito, Minoru Kinoshita
DOI 10.1103/PhysRevB.37.9100 · Physical Review B
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Abstract
Polarized reflectance spectra with polarizations parallel to the crystallographic b and c axes which lie on the two-dimensional conducting planes of a new ambient-pressure organic superconductor (BEDT-TTF) [Cu(NCS)2]2 were measured over the range from 500 to 28 000 cm−1 at room temperature. Plasma-edge-like dispersion with the minimum near 5000 cm−1 was observed for both polarizations. The bandwidths of the superconductor evaluated in terms of the Drude model and the tight-binding approximation were found to be 0.73 eV in the b-axis direction and 0.40 eV in the c-axis direction, thereby indicating the quasi-isotropic nature of the optical charge transport in the bc plane.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (BEDT-TTF)2[Cu(NCS)2] Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.4 | Pressure unresolved | unknown |
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