Regensburg 2019 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 64: Poster Session: Transport

TT 64.14: Poster

Donnerstag, 4. April 2019, 15:00–18:30, Poster D

Proximity induced superconductivity in normal metal/h-BN encapsulated graphene/superconductor junctions — •Preeti Pandey¹, Romain Danneau¹, Ralph Krupke^{1, 2}, and Detlef Beckmann¹ — ¹Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany — ²Department of Materials and Earth Sciences, Technical University Darmstadt, Darmstadt, Germany

We present an electronic transport study of multiterminal normal metal/graphene/superconductor (NGS) junctions. In these junctions, the monolayer graphene sheet was encapsulated between two h-BN crystals. The graphene channel contacts the superconductor and the normal metal electrodes in orthogonal SGS and NGN junction configuration. We have observed clear signs of Josephson effect in the SGS junction when the graphene channel is driven to the n-doped as well as to the p-doped regime using a gate electrode. We have investigated the effect of the current through the NGN junction, which acts as a controlling parameter, on the Josephson current through the SGS junction.