Abstract
We report simultaneous measurements of direct and field-modulated microwave absorption in textured Y 1Ba 2Cu 3O 7−x thin film and ceramic samples. The two techniques are shown to monitor two different characteristic onset temperatures in the superconducting system. Below the critical transition temperature T c, the modulated signal shows noise-like fluctuations whose onset temperature T ∗ decreases logarithmically with the amplitude of the modulation field. These results are ascribed to a distribution of weak Josephson links. Intermittent very low frequency microwave absorption jumps of constant amplitude are observed at fixed temperatures, and are similar to the predicted behaviour of an ideal Josephson junction shunted with a capacitor and a resistor.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
