Spin-orbit protection of induced superconductivity in Majorana nanowires
- Bommer, Jouri D.S.
- Zhang, Hao
- Gül, Önder
- Nijholt, Bas
- Wimmer, Michael
- Rybakov, Filipp N.
- Garaud, Julien
- Rodic, Donjan
- Babaev, Egor
- Troyer, Matthias
- Car, Diana
- Plissard, Sébastien R.
- Bakkers, Erik P.A.M.
- Watanabe, Kenji
- Taniguchi, Takashi
- Kouwenhoven, Leo P.
DOIAbstract
Spin-orbit interaction (SOI) plays a key role in creating Majorana zero modes in semiconductor nanowires proximity coupled to a superconductor. We track the evolution of the induced superconducting gap in InSb nanowires coupled to a NbTiN superconductor in a large range of magnetic field strengths and orientations. Based on realistic simulations of our devices, we reveal SOI with a strength of 0.15-0.35 eV Å. Our approach identifies the direction of the spin-orbit field, which is strongly affected by the superconductor geometry and electrostatic gates
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