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Hyperfine Interactions

, Volume 66, Issue 1–4, pp 429–433 | Cite as

Jahn-Teller calculations for CuO4 and FeO4 clusters in the Nd1.85Ce0.15Cu0.99Fe0.01O4−δ

  • A. Calles
  • E. Yepez
  • J. J. Castro
  • A. Salcido
  • A. Cabrera
  • R. Gomez
  • S. Aburto
  • V. Marquina
  • M. L. Marquina
  • M. Jimenez
  • R. Escudero
Superconductors

Abstract

The Jahn-Teller distortion mechanism in the Nd2−xCe x CuO4 is analyzed. This analysis is based on a quasi-molecular model for the CuO4 cluster havingD4h symmetry. In order to compare with experimental Mössbauer measurements in the doped Nd1.85Ce0.15Cu0.99Fe0.01O4−δ superconductor, the FeO4 cluster is also analyzed for the case of Fe2+ in the high spin state. The results show not evidence of a Jahn-Teller effect in these superconductors.

Keywords

Thin Film High Spin Spin State High Spin State Distortion Mechanism 
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.

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Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1991

Authors and Affiliations

  • A. Calles
    • 1
  • E. Yepez
    • 2
  • J. J. Castro
    • 3
  • A. Salcido
    • 1
  • A. Cabrera
    • 1
  • R. Gomez
    • 1
  • S. Aburto
    • 1
  • V. Marquina
    • 1
  • M. L. Marquina
    • 1
  • M. Jimenez
    • 1
  • R. Escudero
    • 4
  1. 1.Departamento de Física, Facultad de CienciasUNAMMéxico D.F.
  2. 2.Escuela Superior de Física y MatemáticasIPNMéxico D.F.
  3. 3.Departamento de Física, CINVESTAVIPNMéxico D.F.
  4. 4.Instituto de Investigación en MaterialesUNAMMéxico D.F.

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