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Peter Grünberg Institute – Quantum Theory of Materials (PGI-1 / IAS-1) (Forschungszentrum Jülich)
Replication Data for: Single in-situ interface characterization composed of niobium and a selectively grown (Bi1-xSbx)2Te3 topological insulator nanoribbon
Version 1.0
Janßen, Kevin; Rüßmann, Philipp; Liberda, Sergej; Schleenvoigt, Michael; Hou, Xiao; Jalil, Abdur Rehman; Lentz, Florian; Trellenkamp, Stefan; Bennemann, Benjamin; Zimmermann, Erik; Mussler, Gregor; Schüffelgen, Peter; Schneider, Claus-Michael; Blügel, Stefan; Grützmacher, Detlev; Plucinski, Lukasz; Schäpers, Thomas, 2024, "Replication Data for: Single in-situ interface characterization composed of niobium and a selectively grown (Bi1-xSbx)2Te3 topological insulator nanoribbon", https://doi.org/10.26165/JUELICH-DATA/47PXBG, Jülich DATA, V1
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Description
With increasing interest in Majorana physics for possible quantum bit applications, a large interest has been developed to understand the properties of the interface between a s-type superconductor and a topological insulator. Up to this point the interface analysis was mainly focused on in-situ prepared Josephson junctions, which consist of two coupled single interfaces or to ex-situ fabricated single interface devices. In our work we utilize a novel fabrication process, combining selective area growth and shadow evaporation which allows the characterization of a single in-situ fabricated Nb/(Bi0.15Sb0.85)2Te3 nano interface. The resulting high interface transparency, is apparent by a zero bias conductance increase by a factor of 1.7. Furthermore, we present a comprehensive differential conductance analysis of our single in-situ interface for various magnetic fields, temperatures and gate voltages. Additionally, density functional theory calculations of the superconductor/topological insulator interface are performed in order to explain the peak-like shape of our differential conductance spectra and the origin of the observed smearing of conductance features.
Subject Physics
Keyword superconductivity, topological materials, topological superconductor, Majorana, transport, experiment, theory, density-functional theory, DFT
Related Publication Kevin Janßen, Philipp Rüßmann, Sergej Liberda, Michael Schleenvoigt, Xiao Hou, Abdur Rehman Jalil, Florian Lentz, Stefan Trellenkamp, Benjamin Bennemann, Erik Zimmermann, Gregor Mussler, Peter Schüffelgen, Claus-Michael Schneider, Stefan Blügel, Detlev Grützmacher, Lukasz Plucinski, Thomas Schäpers, Single in-situ interface characterization composed of niobium and a selectively grown (Bi1-xSbx)2Te3 topological insulator nanoribbon, Materials Cloud Archive 2023.142 (2023) doi: 10.24435/materialscloud:gt-0r
Institute HNF; IAS-1; PGI-1; PGI-6; PGI-9
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