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Berlin 2024 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 21: Focus Session: Strongly Disordered Superconductors

Dienstag, 19. März 2024, 09:30–12:45, H 0104

The very nature of the disorder-induced superconductor-insulator transition has remained enigmatic in the past two decades. Very recently, a new generation of experiments has been performed that addresses not only DC-properties, but also the fate of the superfluid stiffness very close to the superconductor-insulator transition. These experiments reveal the superfluid dynamics at the transition in unprecedented clarity and were enabled by the advent of high-resolution microwave techniques. This provides a natural link to quantum circuits, where the ultra-high kinetic inductance is exploited in these materials is exploited for new types of high-fidelity quantum bits.
Organizers: Christoph Strunk (University of Regensburg), Ferdinand Evers (University of Regensburg)

09:30 TT 21.1 Hauptvortrag: The fate of the superfluid density near the superconductor-insulator transition — •Benjamin Sacepe
10:00 TT 21.2 Hauptvortrag: Vortices in dirty superconducting films — •Elio König
10:30 TT 21.3 Hauptvortrag: Superfluid stiffness of a strongly disordered superconductor close to the superconductor-insulator transition — •Alexander Weitzel, Lea Pfaffinger, Ilaria Maccari, Klaus Kronfeldner, Thomas Huber, Lorenz Fuchs, Simon Reinhardt, James Mallord, Sven Linzen, Evgeni Il’ichev, Nicola Paradiso, and Christoph Strunk
  11:00 15 min. break
11:15 TT 21.4 Hauptvortrag: Thermally enhanced superconductivity and photonic dissipation in Josephson junction arrays — •Andrew P. Higginbotham
11:45 TT 21.5 Hauptvortrag: Spectral Gap and Order Parameter Statistics in Disordered Superconducting Films — •Matthias Stosiek
12:15 TT 21.6 Temperature-Dependent Vortex Dynamics and Current Limitations in a [(SnSe)(1+δ)]3[NbSe2 ]1 Ferecrystal — •Linus P. Grote, Wieland G. Stoffel, Mahni Müller, Theodor U. Griffin, Olivio Chiatti, Danielle Hamann, David C. Johnson, and Saskia F. Fischer
12:30 TT 21.7 Finite-size scaling in the vicinity of the BKT transition — •Lea Pfaffinger, Alexander Weitzel, Sven Linzen, Evgenii Il’ichev, Nicola Paradiso, and Christoph Strunk
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