Year: 2024
Type: article
Abstract: We analyze both the general symmetry-related and more microscopic considerations that govern the Josephson tunnelling across a finite planar junction between a known $s$-wave superconductor and a candidate unconventional superconductor (e.g., $d_{x^2-y^2}$-wave). Due to the finite size of the probe, the Josephson current possesses an edge contribution, which is shown to be the dominant contribution under certain conditions. Thus, the dependence of the edge contribution on the geometry of the junction can serve as a direct probe of the symmetry of the order parameter in the unconventional superconductor.
Source: npj Quantum Materials
Authors: Andrew C. Yuan, Steven A. Kivelson
Institution: Stanford University
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,790
OpenAlex ID: W4404665082