Print Email Facebook Twitter Electric field tunable superconductor-semiconductor coupling in Majorana nanowires Title Electric field tunable superconductor-semiconductor coupling in Majorana nanowires Author de Moor, M.W.A. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Bommer, J.D.S. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Xu, D. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Winkler, Georg W. (Microsoft Research) Antipov, Andrey E. (Microsoft Research) Bargerbos, A. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Wang, Guanzhong (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) van Loo, N. (TU Delft Applied Sciences; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) op het Veld, R.L.M. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Eindhoven University of Technology; Kavli institute of nanoscience Delft) Gazibegovic, S. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Eindhoven University of Technology; Kavli institute of nanoscience Delft) Car, D. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Eindhoven University of Technology; Kavli institute of nanoscience Delft) Bakkers, E.P.A.M. (TU Delft QN/Bakkers Lab; TU Delft QuTech Advanced Research Centre; Eindhoven University of Technology; Kavli institute of nanoscience Delft) Kouwenhoven, Leo P. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft; Microsoft Quantum Lab Delft) Zhang, H. (TU Delft Applied Sciences; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Faculty Applied Sciences Date 2018 Abstract We study the effect of external electric fields on superconductor-semiconductor coupling by measuring the electron transport in InSb semiconductor nanowires coupled to an epitaxially grown Al superconductor. We find that the gate voltage induced electric fields can greatly modify the coupling strength, which has consequences for the proximity induced superconducting gap, effective g-factor, and spin-orbit coupling, which all play a key role in understanding Majorana physics. We further show that level repulsion due to spin-orbit coupling in a finite size system can lead to seemingly stable zero bias conductance peaks, which mimic the behavior of Majorana zero modes. Our results improve the understanding of realistic Majorana nanowire systems. Subject Majorana fermionsnanowiresspin-orbit couplingsuperconductivity To reference this document use: http://resolver.tudelft.nl/uuid:df844ae0-ee35-410f-8ac7-06154732c702 DOI https://doi.org/10.1088/1367-2630/aae61d ISSN 1367-2630 Source New Journal of Physics, 20 (10) Part of collection Institutional Repository Document type journal article Rights © 2018 M.W.A. de Moor, J.D.S. Bommer, D. Xu, Georg W. Winkler, Andrey E. Antipov, A. Bargerbos, Guanzhong Wang, N. van Loo, R.L.M. op het Veld, S. Gazibegovic, D. Car, E.P.A.M. Bakkers, Leo P. Kouwenhoven, H. Zhang Files PDF de_Moor_2018_New_J._Phys. ... 103049.pdf 3.02 MB Close viewer /islandora/object/uuid:df844ae0-ee35-410f-8ac7-06154732c702/datastream/OBJ/view