Regensburg 2022 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 10: Focus Session: Superconductivity in 2d-Materials and their Heterostructures

Dienstag, 6. September 2022, 09:30–13:15, H3

Two-dimensional crystals have become important throughout condensed matter physics. Only a few of them are intrinsic superconductors, most of these containing heavy elements. Hence, Cooper pairing is strongly affected by spin-orbit interactions that lead to exotic features like Ising pairing and mixed singlet-triplet correlations. The unconventional pairing offers novel degrees of freedom and integrates superconductivity with topological and even higher-order topological edge and hinge states. Moreover, proximity induced superconductivity displays characteristic features owing to the ballistic character and the Dirac dispersion relation of today’s high-quality hexagonal boron nitride/graphene heterostructures. This makes graphene-based heterostructures an interesting platform for Andreev billiards and similar systems.

Organizers: Christoph Stampfer, RWTH Aachen University and Christoph Strunk, University of Regensburg

	09:30	TT 10.1	Hauptvortrag: Two-fold symmetric superconductivity in few-layer NbSe2 — •Vlad Pribiag
	10:00	TT 10.2	Hauptvortrag: Spin-orbit coupling and triplet pairing in mesoscopic superconductors — •marco aprili, marko kuzmanovic, tom dvir, david leboeuf, stefan ilic, menashe haim, maxim khodas, julia meyer, hadar steinberg, and charis quay
	10:30	TT 10.3	Hauptvortrag: Supercurrent diode effect in few-layer NbSe2 — Lorenz Bauriedl, Christian Bäuml, Lorenz Fuchs, Christian Baumgartner, Nicolas Paulik, Jonas M. Bauer, Kai-Qiang Lin, John M. Lupton, Takashi Taniguchi, Kenji Watanabe, Christoph Strunk, and •Nicola Paradiso
	11:00		15 min. break
	11:15	TT 10.4	Hauptvortrag: Superconducting devices in magic-angle twisted bilayer graphene — •Elías Portolés, Shuichi Iwakiri, Giulia Zheng, Kenji Watanabe, Takashi Taniguchi, Peter Rickhaus, Thomas Ihn, Klaus Ensslin, and Folkert de Vries
	11:45	TT 10.5	Hauptvortrag: Minigap and Andreev bound states in ballistic graphene — •Luca Banszerus, Florian Libisch, Andrea Ceruti, Stefan Blien, Kenji Watanabe, Takashi Taniguchi, Andreas Hüttel, Bernd Beschoten, Fabian Hassler, and Christoph Stampfer
	12:15	TT 10.6	Josephson diode effect in a Dirac semimetal NiTe2 — Banabir Pal, •Anirban Chakraborty, Pranava K. Sivakumar, Margarita Davydova, Ajesh K. Gopi, Avanindra K. Pandeya, Jonas A. Krieger, Yang Zhang, Mihir Date, Sailong Ju, Noah Yuan, Niels B.M. Schröter, Liang Fu, and Stuart S.P. Parkin
	12:30	TT 10.7	Tuning lower dimensional superconductivity with hybridization at a superconducting-semiconducting interface — •M. Simonato, A. Kamlapure, E. Sierda, M. Steinbrecher, U. Kamber, E. J. Knol, P. Krogstrop, M.I. Katsnelson, A.A. Khajetoorians, and M. Rösner
	12:45	TT 10.8	Ab inito study of the van der Waals Superconductor NbSe2 — •Mohammad Hemmati, Philipp Rüßmann, and Stefan Blügel
	13:00	TT 10.9	Emergence of unconventional proximity effect in Cr1/3NbS2/NbS2 heterostructures — •Alfredo Spuri, Roman Hartmann, Elke Scheer, and Angelo Di Bernardo