Abstract
Josephson current for a system consisting of an Anderson impurity weakly coupled to two unconventional superconductors is studied and shown to be driven by a surface zero energy (midgap) bound state. The repulsive Coulomb interaction in the dot can turn a (Formula presented) junction into a 0 junction. This effect is more pronounced in p-wave superconductors while in high-temperature superconductors with (Formula presented) symmetry it can exist for rather large artificial centers at which tunneling occurs within a finite region.
Original language | English |
---|---|
Pages (from-to) | 11293-11296 |
Number of pages | 4 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 61 |
Issue number | 17 |
DOIs | |
State | Published - 1 Jan 2000 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics