Regensburg 2025 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 5: Superconductivity: Properties and Electronic Structure I
TT 5.12: Talk
Monday, March 17, 2025, 12:30–12:45, H36
Tuning superconducting properties in 3D nanoarchitectures — •Elina Zhakina1, Luke Turnbull1, Weijie Xu1, Markus König1, Paul Simon1, Wilder Carrillo-Cabrera1, Amalio Fernandez-Pacheco2, Dieter Suess3, Claas Abert3, Vladimir M. Fomin4, Uri Vool1, and Claire Donnelly1 — 1Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187, Dresden, Germany — 2Institute of Applied Physics, TU Wien, Wiedner Hauptstr. 8-10/134,1040 Vienna, Austria — 3University of Vienna, Vienna, Austria — 4Leibniz IFW Dresden, Dresden, Germany
Introducing 3D nanoconfinement into the superconducting system can open a path for local geometrical control and the possibility of going beyond intrinsic properties. However, the fabrication of such intricate nanoarchitectures remains challenging.
In this context, we present an extended approach to creating superconducting 3D nanoarchitectures through focused electron-beam-induced deposition of tungsten. This method allows the realisation of 3D superconducting nanostructures with arbitrary geometries within a wide range of critical temperatures, providing local geometrical control of critical fields and, for example, the realisation of reconfigurable weak links. With transport measurements, we demonstrate the motion of superconducting vortices within these 3D superconducting nanostructures. Therefore, three-dimensional superconducting nanostructures offer new horizons for experimental investigations of the dynamics of vortices, anisotropy and possible applications of curvilinear 3D nanoarchitectures.
Keywords: three-dimantional nanoarchitectures; nanoscale superconductivity; vortex dynamics; anisotropy