Current-Phase Relations of Superconducting PtSi Constriction Josephson Junctions
Abstract
We study the current-phase relations of superconductor-constriction-superconductor Josephson junctions made from platinum silicide thin films by fabricating dc-superconducting quantum interference devices incorporating pairs of junctions and measuring their magnetic-field-dependent electrical transport. By comparing the supercurrent interference patterns with numerical Ginzburg-Landau simulations, we extract the current-phase relations of individual junctions and quantify the degree of nonlinearity. These measurements show that while the constrictions themselves sustain substantial nonlinearity, the effect is moderated by the kinetic inductance of the device leads, which is an important consideration for practical superconducting circuit applications.
Fields of Study & Subjects
Surface and Thin Film Phenomena
Topological Materials and Phenomena
Quantum and electron transport phenomena
Publication details
- Journal / source
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Volume
- 26
- Issue
- 2
- Pages
- 707–712
- Publication date
- 6 January 2026
- Language
- EN