Please use this identifier to cite or link to this item: http://dx.doi.org/10.18419/opus-5043
Authors: Weger, Meir
Nowack, Andreas
Schweitzer, Dieter
Title: Point contact spectroscopy measurements of αt-(BEDT-TTF)2I3 : an alternative interpretation
Issue Date: 1992
metadata.ubs.publikation.typ: Zeitschriftenartikel
metadata.ubs.publikation.source: Fizika nizkich temperatur 18 (1992), S. 580-584
URI: http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-65600
http://elib.uni-stuttgart.de/handle/11682/5060
http://dx.doi.org/10.18419/opus-5043
Abstract: We report on point contact measurements on the organic superconductor αt-(BEDT-TTF)2I3 (Tc~8K). The dV/dI vs V characteristics of homocontacts of this material show strong nonlinearities which, interpreted as a gap-structure, lead to extremly high values of Δ/κTc. Among other possibilities, we discuss the anomaly in terms of a strongly enhanced McMillan-Rowell structure Δ(ε) at ε = Δ BCS + α ph. The enhancement is caused by deviations from Eliashberg equations due to strong coupling (λ = 1-2) together with an Einstein phonon spectrum.
Appears in Collections:08 Fakultät Mathematik und Physik

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