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Optical Study of Two-Dimensional Organic Metal (EO-TTP)2AsF6 (EO-TTP=2-(4,5-Ethylenedioxy-1,3-Dithiol-2-Ylidene)-5-(1,3-Dithiol-2-Ylidene)-1,3,4,6-Tetrathiapentalene)

✍ Scribed by O. Drozdova; K. Yakushi; Y. Misaki; K. Tanaka

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 876 KB
Volume: 168
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.2002.9734

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✦ Synopsis

Polarized reflectance spectra were measured on the conductive (010) plane of metallic (EO-TTP) 2 AsF 6 single crystal. At room temperature, well-defined plasma edges appeared in both directions parallel (E||a) and perpendicular (E>a) to the molecular stack. The intra-and inter-stack transfer integrals were estimated from the plasma frequencies in the framework of tight-binding model. Based on these transfer integrals, we suggested that the Fermi surface was open in the k c direction. Using a generalized Drude model, we obtained the frequency dependence of relaxation rate, which conformed to cðxÞ ¼ c 0 þ bx 2 in the frequency range 1800-5500 cm À1 .

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