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HL: Fachverband Halbleiterphysik
HL 75: Poster IIIB
HL 75.15: Poster
Donnerstag, 19. März 2020, 15:00–17:30, P2/3OG
Novel Concepts for Angle-Resolved Photoemission Spectroscopy and Transport Characterization of 1-Dimensional Topological Insulator/Superconductor Heterostructures — •Kevin Janßen1,2,4, Abdur Rehman Jalil2,4, Tristan Heider1,4, Michael Schleenvoigt2,4, Tobias Schmitt3,4, Gregor Mussler2,4, Peter Schüffelgen2,4, Claus-Michael Schneider1,4, Detlef Grützmacher2,4, Lukasz Plucinski1,4, and Thomas Schäpers2,4 — 1Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany — 2Peter Grünberg Institute (PGI-9), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany — 3Peter Grünberg Institute (PGI-10), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany — 4JARA-FIT, RWTH Aachen University and FZ-Jülich GmbH
Heterostructures formed by topological insulators (TI's) and superconductors are the main basis for topological quantum computing. Quantum processors employing Majorana fermions demand high purity and one dimensionality of these structures. With our integrated approach we aim to characterize these heterostructures of TI nanoribbons and superconductors by comparing angle-resolved photoemission spectroscopy (ARPES) and transport measurements. Here, we present a novel in-situ fabrication scheme to realize one dimensional heterostructures of TI and superconductor for transport characterization by combining selective area growth and a newly developed shadow technique. Additionally, we show indications of the Dirac cone by ARPES from an array of TI nanoribbons.