Far-infrared study of the insulator-metal transition in $θ$-(BEDT-TTF)$_2$RbZn(SCN)$_4$

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dc.creatorWang, N. L.
dc.creatorMori, H.
dc.creatorTanaka, S.
dc.creatorDong, J.
dc.creatorClayman, B. P.
dc.date2001-05-06
dc.date.accessioned2026-07-07T02:41:19Z
dc.date.available2026-07-07T02:41:19Z
dc.descriptionThe temperature-dependent infrared properties of $θ$-(BEDT-TTF)$_2$RbZn(SCN)$_4$ were investigated. In the temperatures above the metal-insulator (M-I) transition, the optical conductivity remains finite in the low energy region, but shows no conventional Drude feature typical of metals. Below the M-I transition temperature, the low-energy spectral weight is significantly reduced. An opening of optical gap at about 300 cm$^{-1}$ is observed clearly in the polarization parallel to the donor-stacking direction. Analysis of both the electronic and vibronic spectra suggests a redistribution of charges in ET molecules as temperature decreases across the M-I transition, providing strong support for the charge-ordering state at low temperatures.
dc.descriptionto be published in J. of Phys.: Condens. Matter
dc.identifierhttps://arxiv.org/abs/cond-mat/0105126
dc.identifierhttp://arxiv.org/abs/cond-mat/0105126
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/17699
dc.subjectStrongly Correlated Electrons
dc.titleFar-infrared study of the insulator-metal transition in $θ$-(BEDT-TTF)$_2$RbZn(SCN)$_4$
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