Microwave resonant activation in hybrid single-gap/two-gap Josephson tunnel junctions
Abstract
Microwave resonant activation is a powerful, straightforward technique to study classical and quantum systems, experimentally realized in Josephson junction devices cooled to very low temperatures. These devices typically consist of two single-gap superconductors separated by a weak link. We report the results of the first resonant activation experiments on hybrid thin film Josephson junctions consisting of a multi-gap superconductor (MgB2) and a single-gap superconductor (Pb or Sn). We can interpret the plasma frequency in terms of theories both for conventional and hybrid junctions. Using these models, we determine the junction parameters including critical current, resistance, and capacitance and find moderately high quality factors of Q0∼ 100 for these junctions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 28, 2016
- Source ID
- 10.1063/1.4963651
Entities
People
- Daniel Cunnane
- Jerome Mlack
- Joseph Lambert
- Ke Chen
- Qi Li
- Roberto C. Ramos
- Steve Carabello
- Wenqing Dai
- X. X. Xi
Organizations
- Drexel University
- National Science Foundation
- Office of Naval Research
- Penn State Harrisburg
- Pennsylvania State University
- Sigma Xi
- Temple University
- United States Department of Energy
- University of the Sciences in Philadelphia