10.26165/JUELICH-DATA/47PXBG Janßen, Kevin(PGI-6 / PGI-9)Rüßmann, Philipphttps://orcid.org/0000-0002-6196-2700(PGI-1 / IAS-1)Liberda, Sergej(PGI-9)Schleenvoigt, Michael(PGI-9)Hou, Xiao(PGI-9)Jalil, Abdur Rehman(PGI-9)Lentz, Florian(Helmholtz Nano Facility)Trellenkamp, Stefan(Helmholtz Nano Facility)Bennemann, Benjamin(PGI-9)Zimmermann, Erik(PGI-9)Mussler, Gregor(PGI-9)Schüffelgen, Peter(PGI-9)Schneider, Claus-Michael(PGI-6)Blügel, Stefan(PGI-1 / IAS-1)Grützmacher, Detlev(PGI-9)Plucinski, Lukasz(PGI-6)Schäpers, Thomas(PGI-9) Jülich DATA 2024 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. Rüßmann, Philipp(PGI-1 / IAS-1)