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1995 | 87 | 4-5 | 801-806
Article title

Resonance Raman Investigations of Low Energetic Modes in the Organic Superconductors α_{t}-(BEDT-TTF)_{2}I_{3} and β-(BEDT-TTF)_{2}IAuI

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Languages of publication
EN
Abstracts
EN
A study of low energetic modes in the resonance Raman spectra of the organic superconductors α_{t}-(BEDT-TTF)_{2}I_{3} (T_{c} = 8 K) and β-(BEDT-TTF)_{2}IAuI (T_{c} = 4 K) in the temperature range of 1.5-100 K was per­formed. In both materials, a strong vanishing of low energetic phonon bands (at 30 cm^{-1} and 40 cm^{-1} for α_{t}-(BEDT-TTF)_{2}I_{3} and at 27 cm^{-1} and 33 cm^{-1} for β-(BEDT-TTF)_{2}IAuI) below 71 was observed. For the sym­metric stretching mode of the I¯_{3} and the IAuI¯ anion at 120 cm^{-1} no change below T, was found. In addition, wavelength dependent measure­ments on α-(BEDT-TTF)_{2}I_{3} were performed, indicating that the modes around 30 cm^{-1} are probably librational modes of the BEDT-TTF molecules.
Keywords
EN
Publisher

Year
Volume
87
Issue
4-5
Pages
801-806
Physical description
Dates
published
1995-04
Contributors
author
  • 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany
author
  • 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany
author
  • Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
References
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Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv87z416kz
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