Shot noise in superconducting junctions with weak link formed by Anderson impurity
Department of Physics, Ben-Gurion University of the Negev -
2 Forschungszentrum Karlsruhe, Institut für Nanotechnologie 76021 Karlsruhe, Germany
3 I. E. Tamm Department of Theoretical Physics, P. N. Lebedev Physics Institute 117924 Moscow, Russia
Accepted: 25 May 2001
A theory is developed to study shot noise in superconducting (SAS) and hybrid (SAN) junctions with singly occupied Anderson impurity (A) as a weak link. The zero-frequency dc component of the shot noise spectral density is calculated at zero temperature as a function of the bias at different Coulomb repulsion strengths (U), and shows a remarkable structure resulting from combination of electron-electron interaction and Andreev reflections.
PACS: 72.10.-d – Theory of electronic transport; scattering mechanisms / 71.27.+a – Strongly correlated electron systems; heavy fermions / 74.40.+k – Superconductivity: Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.)
© EDP Sciences, 2001