Spectral properties of locally correlated electrons in a Bardeen–Cooper–Schrieffer superconductor
By J. Bauer, A. Oguri, A. Hewson. 2007
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We present a detailed study of the spectral properties of a locally correlated site embedded in a Bardeen–Cooper–Schrieffer (BCS) superconducting medium. To this end the Anderson impurity model with a superconducting bath is analysed by means of numerical renormalization group calculations. We calculate one-and two-particle dynamic response functions to elucidate the spectral excitations and the nature of the ground state for different parameter regimes with and without particle–hole symmetry. The position and weight of the Andreev bound states is given for all relevant parameters. We present phase diagrams for the different ground state parameter regimes. This work is also relevant for dynamical mean field theory extensions with superconducting symmetry breaking.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/1c072c7f29047883ec298a52c015ca5155f4a3bb
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In Atomic and Molecular Physics, and Optics
In Condensed Matter Physics
Citations in the corpus
- Josephson and Andreev transport through quantum dots (2011, background): “(Bauer et al., 2007) although for the single lead case and for finite U .”