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HL: Fachverband Halbleiterphysik
HL 27: Poster 2D Materials: Stacking and Heterostructures (joint session O/HL)
HL 27.5: Poster
Dienstag, 18. März 2025, 13:30–15:30, P3
Triplet pairing enabled proximity superconductivity in monolayer WTe2 — •A. Bäder1,2, T. Wichmann1,3, J. Martinez-Castro1,4, P. Rüßmann5,6, K. Jin1,4, T. Samuely7, Z. Lyu1,3, J. Yan8, O. Onufriienko7, P. Szabó7, F. S. Tautz1,3, M. Ternes1,4, S. Lounis5,9, and F. Lüpke1,2 — 1Peter Grünberg Institut (PGI-3), Forschungszentrum Jülich — 2II. Physikalisches Institut, Universität zu Köln — 3Institut für Experimentalphysik IV A, RWTH Aachen — 4Institut für Experimentalphysik II B, RWTH Aachen — 5Peter Grünberg Institut (PGI-1), Forschungszentrum Jülich — 6Julius-Maximilians-Universität Würzburg, Fakultät für Physik und Astronomie — 7Centre of Low Temperature Physics, Faculty of Science, Pavol Jozef Safárik University & Institute of Experimental Physics, Slovak Academy of Sciences — 8Materials Science and Technology Division, Oak Ridge National Laboratory, USA — 9Fakultät für Physik, Universität zu Duisburg-Essen
We use low-temperature scanning tunneling microscopy to investigate proximity-induced triplet pairing and its role in enabling superconductivity in a monolayer WTe2/NbSe2 van der Waals heterostructure. Employing the Kohn-Sham Bogoliubov-de Gennes formalism, we find that conventional s-wave pairing fails to induce superconductivity in the WTe2, in contrast to triplet pairing. Applying an external magnetic field, we examine Abrikosov flux vortices within the heterostructure and exploit them to probe local superconducting properties. Our findings highlight a platform for studying triplet pairing-induced superconductivity with potential topological characteristics.
Keywords: Van der Waals Heterostructure; Superconductivity; Scanning tunnelling microscopy; Triplet pairing; WTe2