SKM 2023 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 26: Interface Controlled Properties and Nanomaterials: Grain Boundaries and Stability, Spectroscopy and Interatomic Potentials
MM 26.9: Talk
Wednesday, March 29, 2023, 12:30–12:45, SCH A 216
Direct writing of three-dimensional nano-superconductors — •Elina Zhakina1, Markus König1, Sebastian Seifert1, Amalio Fernández-Pacheco2, Paul Simon1, Wilder Carrillo-Cabrera1, and Claire Donnelly1 — 1Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany — 2Institute of Nanoscience & Materials of Aragón CSIC-University of Zaragoza, Zaragoza, Spain
In recent years, superconductivity and vortex matter in curved 3D nanoarchitectures have become a vibrant research avenue because of the rich physics of the emerging geometry- and topology-induced phenomena [1]. However, the fabrication of such architectures is still challenging. Currently, fabrication techniques of innovative three-dimensional (3D) nano-objects are being developed [2].
Here, we present a new route to fabricating superconducting 3D nanoarchitectures by focused electron-beam-induced-deposition [3] of tungsten, allowing for the realisation of complex 3D superconducting geometries with a critical temperature on the order of 5 K. We observe a geometrical effect of the 3D nanoarchitecture, namely, the angular dependence of the upper-critical magnetic field that is not possible in bulk superconductors. This method unveils a wide perspective in experimental studies of the dynamics of topological defects in curved 3D nanoarchitectures.
[1] V. M. Fomin et al, Appl. Phys. Lett. 120, (2022) [2] R. Corboda et al, Beilstein J. Nanotechnol, 11, (2020) [3] L. Skoric et al, Nano Letters 20 (2020)