Zero-energy Andreev bound states from quantum dots in proximitized Rashba nanowires

@article{Reeg2018ZeroenergyAB,
  title={Zero-energy Andreev bound states from quantum dots in proximitized Rashba nanowires},
  author={Christopher Reeg and Olesia Dmytruk and Denis Chevallier and Daniel Loss and Jelena Klinovaja},
  journal={Physical Review B},
  year={2018}
}
We study an analytical model of a Rashba nanowire that is partially covered by and coupled to a thin superconducting layer, where the uncovered region of the nanowire forms a quantum dot. We find that, even if there is no topological superconducting phase possible, there is a trivial Andreev bound state that becomes pinned exponentially close to zero energy as a function of magnetic field strength when the length of the quantum dot is tuned with respect to its spin-orbit length such that a… 

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