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Journal of Low Temperature Physics

, Volume 99, Issue 3–4, pp 263–265 | Cite as

Light scattering mechanism in(Y/Pr)Ba 2 Cu 3 O 7 superlattices

  • E. Sherman
  • R. Li
  • R. Feile
  • H. Adrian
  • G. Jakob
Experimental Facts
  • 16 Downloads

Abstract

An extra peak was observed in the region of 290–320 cm−1 of Raman spectra of a high quality (001) (Y2Pr1)(Ba2Cu3O7) superlattice in Z(X′,Y′)Z geometryat low temperature. It was identified as an even combination of B1u vibrations in Y-subcells. We propose an asymmetric field mechanism for the Raman intensity of this extra phonon.

PACS numbers

63.20.Kr 74. 70. Vy 78.30.−j 

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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • E. Sherman
    • 1
  • R. Li
    • 1
  • R. Feile
    • 1
  • H. Adrian
    • 1
    • 2
  • G. Jakob
    • 1
    • 2
  1. 1.Institute of PhysicsUniversity MainzMainzGermany
  2. 2.Institute of Solid State PhysicsTH DarmstadtDarmstadtGermany

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