Spin-Orbit Protection of Induced Superconductivity in Majorana Nanowires

Jouri D.S. Bommer*, Hao Zhang, Önder Gül, Bas Nijholt, Michael Wimmer, Filipp N. Rybakov, Julien Garaud, Diana Car, Sébastien R. Plissard, Erik P.A.M. Bakkers, Leo P. Kouwenhoven

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

39 Citations (Scopus)
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Abstract

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.

Original languageEnglish
Article number187702
JournalPhysical Review Letters
Volume122
Issue number18
DOIs
Publication statusPublished - 2019

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