An Andreev molecule is a system of closely spaced superconducting weak links accommodating overlapping Andreev Bound States. Recent theoretical proposals have considered one-dimensional Andreev molecules with a single conduction channel. Here we apply the scattering formalism and extend the analysis to multiple conduction channels, a situation encountered in epitaxial superconductor/semiconductor weak links. We obtain the multi-channel bound state energy spectrum and quantify the contribution of the microscopic non-local processes leading to the formation of Andreev molecules.
Cited by 1
Régis Mélin, Inversion in a four-terminal superconducting device on the quartet line. I. Two-dimensional metal and the quartet beam splitter
Phys. Rev. B 102, 245435 (2020) [Crossref]