Print Email Facebook Twitter Conductance through a helical state in an Indium antimonide nanowire Title Conductance through a helical state in an Indium antimonide nanowire Author Kammhuber, J. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Cassidy, M.C. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Pei, F. (TU Delft QN/Quantum Transport; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Nowak, M.P. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; AGH University of Science and Technology; Kavli institute of nanoscience Delft) Vuik, A. (TU Delft QN/Akhmerov Group; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Gül, Önder (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Car, D. (TU Delft QRD/Kouwenhoven Lab; Eindhoven University of Technology) Plissard, S.R. (Université de Toulouse) 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) Wimmer, M.T. (TU Delft Qubit Research Division; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Kouwenhoven, Leo P. (TU Delft QRD/Kouwenhoven Lab; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft) Department Qubit Research Division Date 2017-09-07 Abstract The motion of an electron and its spin are generally not coupled. However in a one-dimensional material with strong spin-orbit interaction (SOI) a helical state may emerge at finite magnetic fields, where electrons of opposite spin will have opposite momentum. The existence of this helical state has applications for spin filtering and cooper pair splitter devices and is an essential ingredient for realizing topologically protected quantum computing using Majorana zero modes. Here, we report measurements of a quantum point contact in an indium antimonide nanowire. At magnetic fields exceeding 3 T, the 2 e2/h conductance plateau shows a re-entrant feature toward 1 e2/h which increases linearly in width with magnetic field. Rotating the magnetic field clearly attributes this experimental signature to SOI and by comparing our observations with a numerical model we extract a spin-orbit energy of approximately 6.5 meV, which is stronger than the spin-orbit energy obtained by other methods. Subject Electronic properties and materialsNanowiresSpintronics To reference this document use: http://resolver.tudelft.nl/uuid:4c77adab-479b-487e-ae24-e902bfa7ebd9 DOI https://doi.org/10.1038/s41467-017-00315-y ISSN 2041-1723 Source Nature Communications, 8 Part of collection Institutional Repository Document type journal article Rights © 2017 J. Kammhuber, M.C. Cassidy, F. Pei, M.P. Nowak, A. Vuik, Önder Gül, D. Car, S.R. Plissard, E.P.A.M. Bakkers, M.T. Wimmer, Leo P. Kouwenhoven Files PDF s41467_017_00315_y.pdf 1.18 MB Close viewer /islandora/object/uuid:4c77adab-479b-487e-ae24-e902bfa7ebd9/datastream/OBJ/view