80–111 GHz quasi-optical measurement of the complex conductivities of YBa2Cu3O7 superconducting thin films
- 15 March 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 62 (11) , 1298-1300
- https://doi.org/10.1063/1.108713
Abstract
Complex conductivities of YBa2Cu3O7 high‐temperature superconducting thin films were measured from 80 to 111 GHz using quasi‐optical techniques. From transmission measurements, a peak was obtained in σ1 versus temperature. Measurements of the frequency dependence of this peak position found it shifted to higher temperatures with increasing frequency. The data for both σ1 and σ2, as a function of frequency, were fitted using a BCS/effective medium model. This fit indicates that the observed peak in σ1 is a result of the temperature dependence of the carrier mean free path combined with effects resulting from the granularity of the films.Keywords
This publication has 22 references indexed in Scilit:
- Klein, Holczer, and Grüner replyPhysical Review Letters, 1992
- Observation of a peak below Tc in the RF-conductivity Re{ σ(T)} of YBa2Cu3O7Physica C: Superconductivity and its Applications, 1991
- Microwave properties of YBa2Cu3O7−δ high-transition-temperature superconducting thin films measured by the power transmission methodJournal of Applied Physics, 1991
- Coherence effects in electromagnetic absorption in superconductorsPhysical Review B, 1991
- Dynamic conductivity and coherence peak in superconductorsPhysical Review Letters, 1991
- Phonon suppression of coherence peak in nuclear spin relaxation rate of superconductorsNature, 1991
- Millimeter-wave complex conductivity of some epitaxial filmsPhysical Review B, 1990
- Electromagnetic response of layered superconductorsPhysical Review B, 1989
- Microwave transmission through films ofPhysical Review B, 1988
- Millimeter-wave complex-conductivity measurements of Bi-Ca-Sr-Cu-O superconducting thin filmsPhysical Review B, 1988