Drastic effect of weak interaction near special points in semiclassical multiterminal superconducting nanostructures

@article{Erdmanis2021DrasticEO,
  title={Drastic effect of weak interaction near special points in semiclassical multiterminal superconducting nanostructures},
  author={Jānis Erdmanis and {\'A}rp{\'a}d Luk{\'a}cs and Yuli V. Nazarov},
  journal={Physical Review B},
  year={2021}
}
A generic semiclassical superconducting nanostructure connected to multiple superconducting terminals hosts a quasi-continuous spectrum of Andreev states. The spectrum is sensitive to the superconducting phases of the terminals. It can be either gapped or gapless depending on the point in the multi-dimensional parametric space of these phases. Special points in this space correspond to setting some terminals to the phase 0 and the rest to the phase of π . For a generic nanostructure, three… 

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