Tuning Andreev reflection and conductance in proximitized nanowires through the spin-orbit field direction

@misc{musca2026tuning,
  title = {{Tuning Andreev reflection and conductance in proximitized nanowires through the spin-orbit field direction}},
  author = {Leonardo Musca and Fabrizio Dolcini},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.03020},
  eprint = {2609.03020},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.03020},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Tuning Andreev reflection and conductance in proximitized nanowires through the spin-orbit field direction
AU  - Leonardo Musca
AU  - Fabrizio Dolcini
PY  - 2026
DA  - 2026/09/02
PB  - arXiv
DO  - 10.48550/arxiv.2609.03020
UR  - https://arxiv.org/abs/2609.03020
AB  - We investigate the Andreev reflection (AR) and the nonlinear conductance in a normal-superconductor junction realized with a proximitized semiconductor nanowire exposed to a magnetic field along its axis. We show that, while at zero energy the AR coefficient is determined by the topological phase of the superconducting side of the junction, at finite energy the AR is strongly affected by the directions of the Rashba spin-orbit field characterizing the normal and the proximitized sides. The tunability of the AR and the nonlinear conductance as a function of the spin-orbit misalignment angle is particularly pronounced when the proximitized side is in the topologically trivial phase. The spin-orbit field direction is revealed to be an efficient knob to control the electron transport through the hybrid junction, realizing an electrically widely tunable device. The implementation in realistic setups is discussed.
ER  -