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Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 88: Electronic Structure of Surfaces II

O 88.5: Vortrag

Donnerstag, 4. April 2019, 16:00–16:15, H26

Determination of the superconducting gap of Ru(0001) and observation of a proximity-induced gap in 1ML Co/Ru(0001) — •Julian Skolaut1, Loic Mougel1, Marie Hervé1, Timofey Balashov1, and Wulf Wulfhekel1,21Physikalisches Institut, Karlsruhe Institut für Technologie, 76131 Karlsruhe, Germany — 2Institut für Nanotechnologie, Karlsruhe Institut für Technologie, 76344 Eggenstein-Leopoldshafen, Germany

The proximity effect at the interface between a superconductor and a ferromagnet is of great interest since it can, in combination with specific spin textures in the ferromagnet, potentially be used as a platform to study majorana modes.

We used a scanning tunneling microscope (STM) mounted on a dilution cryostat to investigate the superconducting gap of Ru(0001) and its dependence on the temperature.

Furthermore, Cobalt islands were grown on Ru(0001) to investigate the the proximity-induced superconducting gap on the Cobalt islands. Even though significantly reduced in intensity, the gap was observed on both substrate and islands.

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