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Journal of Superconductivity

, Volume 9, Issue 4, pp 463–465 | Cite as

Phononic and spin excitations in Y1−xPr x Ba2Cu3O6.9 crystals

  • M. Mayer
  • P. Knoll
  • E. Holzinger-Schweiger
Article
  • 12 Downloads

Abstract

The Y1−xPr x Ba2Cu3O6.9 system has been investigated by quantitativeμ-Raman measurements. The magnetic response of the antiferromagnetic ordered Cu spins in the CuO2 plane has been observed via the two-magnon-Raman scattering. The in-plane exchange energy is determined to 780 cm−1 in the system withx=1. Phonon behavior as well as magnetic scattering indicate that the band structure of the CuO2 planes in PrBa2Cu3O6.9 is similar to that in insulating YBa2Cu3O6.

Key words

Raman Y1−xPrxBa2Cu3Oy two-magnon scattering phonons absolute cross sections 

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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • M. Mayer
    • 1
  • P. Knoll
    • 1
  • E. Holzinger-Schweiger
    • 2
  1. 1.Institute for Experimental PhysicsUniversity GrazGrazAustria
  2. 2.Institute for Solid State PhysicsTechnical University GrazGrazAustria

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