Resonant Raman Scattering of the Normal and Superconducting State of A3C60 Films (A = Rb,K)

  • C. Taliani
  • V. N. Denisov
  • A. A. Zakhidov
  • G. Stanghellini
  • G. Ruani
  • R. Zamboni
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 117)


Significant spectral changes upon crossing superconducting Tc have been observed by resonant Raman scattering (RRS) (excited at 1.16 eV) in Rb3C60 and K3C60 thin films. In RRS spectra Hg (l) and Hg (2) modes clearly show Fano-lineshapes due fo resonance with electronic continuum. The electronic Raman scattering is clearly observed as a broad background (fwhm =450 cm−1) at low energy. The large linewidth observed in Hg (2) (fwhm = 60 cm−1) indicates a sizable electron-phonon coupling. Below Tc only Hg (2) mode changes dramatically its asymmetric lineshape becoming more symmetric in the superconducting phase. The fitting of experimentally observed Hg(2) lineshapes shows the abrupt change of the Fano parameters at Tc. Interband t lu tlu * transitions are suggested as a possible origin for low energy electronic excitations.


Raman Shift Electronic Continuum Broad Background Resonance Raman Scattering Resonance Raman Scattering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Haddon R.C. et al., Nature, 350 (1991)Google Scholar
  2. 2.
    Danieli R. et. al., Solid. State Commun. 81, 257 (1992)ADSCrossRefGoogle Scholar
  3. 3.
    Duclos S.J. et. al., Science 254, 1625 (1991)ADSCrossRefGoogle Scholar
  4. 4.
    Zhou P. et. al., Phys. Rev. B. (in print)Google Scholar
  5. 5.
    Mitch M.G. et. al., Phys. Rev. Lett. 68, 883 (1992)ADSCrossRefGoogle Scholar
  6. 6.
    P.C. Eklund, P. Zhou, K.A. Wang. G. Dresselhaus, M.S. Dresselhaus, J.Phys. Chem. Sol. 53, 1391 (1992)ADSCrossRefGoogle Scholar
  7. 7.
    V.N. Denisov, A.A. Zakhidov, Rdanieli, G. Ruani, A. Rzamboni and C. Taliani, Int. J. Modern. Phys. B6/23-26, 4019 (1993)ADSGoogle Scholar
  8. 8.
    G. Ruani, V.N. Denisov, A.A. Zakhidov, R. Zamboni and C. Taliani, in “Laser deposition of Advanced Materials”, eds M. Allegrini et. al, 1992 Edizioni ETS, Pisa, p.l22Google Scholar
  9. 9.
    Zhang F.C., Ogata M., Rice T.M., Phys. Rev. Lett. 67, 3452 (1991)ADSCrossRefGoogle Scholar
  10. 10.
    Johnson K.H., McHenry M.E. and Clougherty D.P., Physica C 183, 319 (1991)ADSCrossRefGoogle Scholar
  11. 11.
    Varma C.M., Zaanen J. and Raghavachari K., Science 254, 989 (1991)ADSCrossRefGoogle Scholar
  12. 12.
    Schluter M.A. et. al., Phys. Rev. Lett. 68, 526 (1992)ADSCrossRefGoogle Scholar
  13. 13.
    Jishi R.A. and Dresselhaus M.S., Phys. Rev. B45, 2597 (1992)ADSGoogle Scholar
  14. 14.
    Asai Y. and Kawaguchi Y., Int. J. Mod. Phys. B6/23-26, (1993)Google Scholar
  15. 15.
    Dolgov O. and Mazin I., Solid. State Comm. 81, 935 (1992)ADSCrossRefGoogle Scholar
  16. 16.
    M. J. Rice and H.-Y. Choi, this Proceedings of IWEP’93Google Scholar
  17. 17.
    M.J. Rice, Phys. Rev. Lett., 37, 36 (1976), and Proc. IWEP’91ADSCrossRefGoogle Scholar
  18. 18.
    Baskaran G. and Tossati E., Curr. Sci. 61, 3452 (1991), see also this ProceedingsGoogle Scholar
  19. 19.
    Chakravarty S, and Kivelson S., Europhys. Lett. 16, 751 (1991)ADSCrossRefGoogle Scholar
  20. 20.
    K.-J. Fu, W.L. Karny, et. al, Phys. Rev. B46, 1937 (1992)ADSGoogle Scholar
  21. 21.
    V.N. Denisov, B.N. Mavrin, G. Ruani, R. Zamboni and C. Taliani, Sov. Phys. JETP, 75, 158 (1992)Google Scholar
  22. 22.
    Prassides K. et. al., Nature 354, 462 (1991), Europhys. Lett.ADSCrossRefGoogle Scholar
  23. 23.
    A.A. Zakhidov, A. Ugawa, K. Imaeda, K. Yakushi, H. Inokuchi, et. al, Sol. St. Comm, 79 939, (1991)ADSCrossRefGoogle Scholar
  24. 24.
    Y.-N. Xu, M.-Z. Huang, and W.Y. Ching, Phys. Rev. B44, 13171 (1992)ADSGoogle Scholar
  25. 25.
    M. Cardona, Phys. C 185-189, 65 (1991)ADSCrossRefGoogle Scholar
  26. 26.
    R. Feile, P. Leiderer, J. Kowalewski, W. Assmus, J. Schubert and U. Poppe, Z. Phys. B. 73, 155 (1988)ADSCrossRefGoogle Scholar
  27. 27.
    L. Degiorgi, et al., Phys. Rev. B, 69, 2987 (1992).ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • C. Taliani
    • 1
  • V. N. Denisov
    • 2
  • A. A. Zakhidov
    • 3
  • G. Stanghellini
    • 1
  • G. Ruani
    • 1
  • R. Zamboni
    • 1
  1. 1.Istituto di Spettroscopia MolecolareCNRBolognaItaly
  2. 2.Institute of SpectroscopyRussian Academy of SciencesTroitskRussia
  3. 3.Department of ThermophysicsUzbek Academy of SciencesTashkentUzbekistan

Personalised recommendations