Please use this identifier to cite or link to this item: http://dx.doi.org/10.18419/opus-7017
Authors: Dressel, Martin
Eldridge, John E.
Wang, H. Hau
Geiser, Urs
Williams, Jack M.
Title: Analysis of the infrared conductivity of the organic superconductor α-(BEDT-TTF)2(NH4)Hg(NCS)4
Issue Date: 1992
metadata.ubs.publikation.typ: Zeitschriftenartikel
metadata.ubs.publikation.source: Synthetic Metals 52 (1992), S. 201-211
URI: http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-46053
http://elib.uni-stuttgart.de/handle/11682/7034
http://dx.doi.org/10.18419/opus-7017
Abstract: An optical study of the α phase superconducting compound, α-(ET)2(NH4)Hg(NCS)4 has been performed. The absolute reflectivity of a deuterated crystal has been measured as a function of temperature and polarization, from which the conductivity was obtained. The overall shapes of these spectra are discussed and compared with those obtained from compounds of different phases. In particular we were able to perform a Drude fit of the low-temperature conductivity for one polarization, rather than of the reflectivity dip. The plasma frequency and damping were extracted and these yielded a reasonable effective mass and mean free path. The isotopic vibrational frequency shifts were obtained by repeating the measurements on a protonated sample, which was, however, too small to provide absolute data. The vibrational features are assigned and discussed.
Appears in Collections:15 Fakultätsübergreifend / Sonstige Einrichtung

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