Related Experiment Video
Updated: Jun 26, 2025

Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
Supercurrent in the Presence of Direct Transmission and a Resonant Localized State
Vukan Levajac1, Hristo Barakov2, Grzegorz P Mazur1
1QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
Abstract:
We study the current-phase relation (CPR) of an InSb-Al nanowire Josephson junction in parallel magnetic fields up to 700 mT. At high magnetic fields and in narrow voltage intervals of a gate under the junction, the CPR exhibits π shifts. The supercurrent declines within these gate intervals and shows asymmetric gate voltage dependence above and below them. We detect these features sometimes also at zero magnetic field. The observed CPR properties are reproduced by a theoretical model of supercurrent transport via interference between direct transmission and a resonant localized state.
Related Concept Videos
Sound Waves: Resonance
Series Resonance
Resonance in an AC Circuit
Parallel Resonance
Characteristics of Series Resonant Circuit
The Power Superposition Principle

