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

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

doi:10.1016/S0921-4534(99)00127-6

Microwave surface impedance of high-quality YBa₂Cu₃O_7-x thin films

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

Research output: Contribution to journal › Conference article › peer-review

9 Scopus citations

Abstract

The parallel plate resonator method has been used for measuring high quality YBa₂Cu₃O_7-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 language	English
Pages (from-to)	550-553
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	317-318
DOIs	https://doi.org/10.1016/S0921-4534(99)00127-6
State	Published - May 1999
Externally published	Yes
Event	Proceedings of the 1998 1st Euroconference on Anomalous Complex Superconductors - Crete, Greece Duration: 26 Sep 1998 → 3 Oct 1998

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10.1016/S0921-4534(99)00127-6

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title = "Microwave surface impedance of high-quality YBa2Cu3O7-x thin films",

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.",

author = "E. Farber and Contour, \{J. P.\} and G. Deutscher",

note = "Funding Information: We would also like to thank Nicole Bontemps for an illuminating discussion on the possible origins of the small linear term in λ ( T ). This work was partially supported by the Israel National Science Foundation, by the Heinrich Hertz-Minerva-center for High Temperature Superconductivity, and by the Oren Family chair of Experimental Solid State Physics. ; Proceedings of the 1998 1st Euroconference on Anomalous Complex Superconductors ; Conference date: 26-09-1998 Through 03-10-1998",

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doi = "10.1016/S0921-4534(99)00127-6",

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AU - Farber, E.

AU - Contour, J. P.

AU - Deutscher, G.

N1 - Funding Information: We would also like to thank Nicole Bontemps for an illuminating discussion on the possible origins of the small linear term in λ ( T ). This work was partially supported by the Israel National Science Foundation, by the Heinrich Hertz-Minerva-center for High Temperature Superconductivity, and by the Oren Family chair of Experimental Solid State Physics.

PY - 1999/5

Y1 - 1999/5

N2 - 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.

AB - 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.

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - Proceedings of the 1998 1st Euroconference on Anomalous Complex Superconductors

Y2 - 26 September 1998 through 3 October 1998

ER -

Microwave surface impedance of high-quality YBa₂Cu₃O_7-x thin films

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