Print Email Facebook Twitter InSbAs two-dimensional electron gases as a platform for topological superconductivity Title InSbAs two-dimensional electron gases as a platform for topological superconductivity Author Moehle, C.M. Ke, C.T. Wang, Q. Thomas, C. Xiao, D. Karwal, S. Lodari, M. van de Kerkhof, V. Termaat, R. Gardner, G.C. Scappucci, G. Manfra, M.J. Goswami, S. Publication year 2021 Abstract Topological superconductivity can be engineered in semiconductors with strong spin-orbit interaction coupled to a superconductor. Experimental advances in this field have often been triggered by the development of new hybrid material systems. Among these, two-dimensional electron gases (2DEGs) are of particular interest due to their inherent design flexibility and scalability. Here we discuss results on a 2D platform based on a ternary 2DEG (InSbAs) coupled to in-situ grown Aluminum. The spin-orbit coupling in these 2DEGs can be tuned with the As concentration, reaching values up to 400 meVÅ, thus exceeding typical values measured in its binary constituents. In addition to a large Landé g-factor ∼ 55 (comparable to InSb), we show that the clean superconductor-semiconductor interface leads to a hard induced superconducting gap. Using this new platform we demonstrate the basic operation of phase- controllable Josephson junctions, superconducting islands and quasi-1D systems, prototypical device geometries used to study Majorana zero modes. Subject Two-dimensional electron gasSpin-orbit interactionJosephson junctionsTunneling spectroscopyTopological superconductivityHigh Tech Systems & MaterialsIndustrial Innovation To reference this document use: http://resolver.tudelft.nl/uuid:e3c86560-933c-4c07-887e-e112da9aeb37 DOI https://doi.org/10.1021/acs.nanolett.1c03520 TNO identifier 961818 Publisher American Chemical Society ACS, Washington DC, USA Source NANO letters, 21 (21), 9990-9996 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.