Microwave surface impedance of high-quality YBa2Cu3O7-x thin films

E. Farber, J. P. Contour, G. Deutscher

Research output: Contribution to journalConference articlepeer-review

Abstract

The parallel plate resonator method has been used for measuring high quality YBa2Cu3O7-x (YBCO) thin films. The surface resistance and the real part of the conductivity show a non-monotonic behaviour with a broad peak around 45 K. The penetration depth and the real part of the conductivity vary linearly at low temperatures. The lowest penetration depth linear fitting has a slope value of 2.2 to 2.5 angstrom/K up to 20 K which is lower than previous measurements on YBCO single crystals. An interpretation of this smaller slope in terms of the generally accepted d-wave order parameter symmetry presents difficulties.

Original languageEnglish
Pages (from-to)550-553
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume317-318
DOIs
StatePublished - May 1999
EventProceedings of the 1998 1st Euroconference on Anomalous Complex Superconductors - Crete, Greece
Duration: 26 Sep 19983 Oct 1998

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