Dresden 2020 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 2: Superconductivity: Sample Preparation, Characterization, Properties and Electronic Structure

TT 2.2: Talk

Monday, March 16, 2020, 09:45–10:00, HSZ 103

Interface effects in magnetic and superconducting heterostructures — •Sebastian Kölsch and Michael Huth — Institute of Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Germany

Niobium-based thin films in combination with non-collinear ferromagnetic layers offer the potential for applications in superconducting spintronics, especially in superconducting spin valves (SSV) [1]. Regarding the interface between these two different layers, a gapless and odd-in-frequency superconducting ground state may be stabilized, where the Cooper-pairs remain in a spin-triplett configuration.

Considering potential applications, a reduction of complexity in terms of a single magnetic layer in SVVs is mandatory. In this case the binary compounds of manganese-silicon appear as an ideal partner due to their rich magnetic phase diagram [2]. Here we present recent results on the successful growth of manganese-silicon thin films on a superconducting niobium layer.

[1] N.G. Pugachet al. Appl. Phys. Lett. 111, 162601 (2017)

[2] I. I. Lobanova et al. Scientific Reports 6, 22101 (2016)