Determination of the electron phonon coupling and the superconducting gap in 
β-(BEDT-TTF)2X crystals (X=I3, IAuI)

Nowack, A.; Poppe, U.; Weger, M.; Schweitzer, D.; Schwenk, H.

doi:10.1007/BF01307862

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Determination of the electron phonon coupling and the superconducting gap in β-(BEDT-TTF)2X crystals (X=I3, IAuI)

MPS-Authors

/persons/resource/persons95265

Schweitzer, D.
Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society;

External Resource

https://link.springer.com/content/pdf/10.1007/BF01307862.pdf
(Any fulltext)

https://doi.org/10.1007/BF01307862
(Any fulltext)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Nowack, A., Poppe, U., Weger, M., Schweitzer, D., & Schwenk, H. (1987). Determination of the electron phonon coupling and the superconducting gap in β-(BEDT-TTF)2X crystals (X=I3, IAuI). Zeitschrift für Physik B, 68, 14-47. doi:10.1007/BF01307862.

Cite as: https://hdl.handle.net/21.11116/0000-0008-67FF-6

Abstract

We performed point-contact and tunneling measurements on the organic superconductors β-(BEDT-TTF)2I3 and β-(BEDT-TTF)2IAuI, in the normal and superconducting states. The point-contact measurement in the normal state provides the Eliashberg function α2(ω)F (ω). This function has maxima at 4 and 15 mV, as well as a sharp peak at 1 mV which seems to indicate a very soft phonon strongly coupled to the electrons. The measurements in the superconducting state provide the superconducting gap, which for the tunneling measurements has a value 2Δ/kB Tc≅4, just slightly above the BCS value.