Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 68: Superconductivity: Properties and Electronic Structure
TT 68.13: Vortrag
Donnerstag, 21. März 2024, 12:45–13:00, H 3010
Curvilinear superconducting vortices in three-dimensional nano architecture — •Elina Zhakina1, Luke Turnbull1, Weijie Xu1, Markus König1, Paul Simon1, Wilder Carrillo-Cabrera1, Amalio Fernandez-Pacheco2, Dieter Suess3, Claas Abert3, Vladimir M. Fomin4, 5, and Claire Donnelly1 — 1Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany — 2Institute of Applied Physics, TU Wien, Vienna, Austria — 3University of Vienna, Vienna, Austria — 4Leibniz IFW Dresden, Dresden, Germany — 5Moldova State University, Republic of Moldova
When one patterns superconductors into three dimensional, curvilinear nanoarchitectures, intriguing phenomena in the superconductivity, and behaviour of superconducting vortices, arise due to both geometric- and topology-induced effects. In this context, we present an innovative approach to creating superconducting 3D nanoarchitectures through focused electron-beam-induced deposition of tungsten. This method empowers the realization of 3D superconducting nanostructures featuring a critical temperature near 5 K. Our experimental work proves the existence and propagation of superconducting vortices within these 3D superconducting nanostructures. We also uncover the profound geometrical effects inherent to 3D nanoarchitectures, such as the angular dependence of the upper-critical magnetic field, which one can harness to design the local superconducting state of the system. The introduction of this technique opens up new horizons for experimental investigations into the dynamics of vortices within the superconducting order parameter in curved 3D nanoarchitectures.
Keywords: three-dimantional nanoarchitectures; nanoscale superconductivity; vortex dynamics; anisotropy