2018/07/31 by Jouri D. S. Bommer, Hao Zhang, Önder Gül +13 · 1 citation
Physics and Astronomy · #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.122.187702
published as Phys. Rev. Lett. 122, 187702 (2019) · 7 pages, 4 figures. Supplemental Material as ancillary file
arxiv created 2019/05/10 · arxiv updated 2019/05/13
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\requiremediawiki-texvcÅ. Our approach identifies the direction of the spin-orbit field, which is strongly affected by the superconductor geometry and electrostatic gates.