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  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. (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.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0008-67FF-6 Version Permalink: https://hdl.handle.net/21.11116/0000-0008-6800-3
Genre: Journal Article
Alternative Title : Determination of the electron phonon coupling and the superconducting gap in beta-(BEDT-TTF)2X crystals (X=I3, IAuI)

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ZsPhysikB_68_1987_41.pdf (Any fulltext), 608KB
 
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 Creators:
Nowack, A., Author
Poppe, U., Author
Weger, M., Author
Schweitzer, D.1, Author           
Schwenk, H., Author
Affiliations:
1Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705              

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 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.

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Language(s): eng - English
 Dates: 1987-03-061987-03
 Publication Status: Issued
 Pages: 7
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/BF01307862
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Title: Zeitschrift für Physik B
  Other : Zeitschrift für Physik B Condensed Matter
Source Genre: Journal
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Publ. Info: Springer-Verlag
Pages: - Volume / Issue: 68 Sequence Number: - Start / End Page: 14 - 47 Identifier: CoNE: https://pure.mpg.de/cone/journals/resource/0722-3277