Superconducting order parameter π-phase shift in magnetic impurity wires
Kristofer Björnson, Alexander V. Balatsky, Annica M. Black-Schaffer
DOI 10.1103/PhysRevB.95.104521 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
It has previously been found that a magnetic impurity in a conventional s-wave superconductor can give rise to a local π-phase shift of the superconducting order parameter. By studying a finite wire of ferromagnetic impurities, we are able to trace the origin of the π-phase shift to a resonance condition for the Bogoliubov-de Gennes quasiparticle states. When nonresonating states localized at the impurity sites are pulled into the condensate for increasing magnetic strength, the superconducting order parameter is reduced in discrete steps, eventually resulting in a π-phase shift. We also show that for a finite spin-orbit coupling, the π-phase shift is preserved and occurs in a large portion of the topologically nontrivial phase.
Similar papers
In-gap states induced by magnetic impurities on wide-band s-wave superconductors: Self-consistent calculations
similarity 0.91Divya Jyoti et al.
Source status unknown — claims are unverified
Superconducting order parameter -phase shift in magnetic impurity wires
similarity 0.91Björnson, Kristofer et al. · 2017 · arXiv:1609.07626
Source status unknown — claims are unverified
Magnetically induced superconducting correlations: Bogolyubov–de Gennes calculations of the gap profile in a superconductor with magnetic order
similarity 0.90P. D. Sacramento et al.
Source status unknown — claims are unverified
Inhomogeneous Superconductivity Induced in a Ferromagnet by Proximity Effect
similarity 0.89T. Kontos et al.
Source status unknown — claims are unverified
Spectral properties and quantum phase transitions in superconducting junctions with a ferromagnetic link
similarity 0.89M. Rouco et al.
Source status unknown — claims are unverified
Tunneling spectra of impurity states in unconventional superconductors
similarity 0.88P. O. Sukhachov et al.
Source status unknown — claims are unverified