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DS: Fachverband Dünne Schichten

DS 12: 2D Materials I

DS 12.7: Vortrag

Mittwoch, 11. März 2026, 11:15–11:30, REC/C213

Topological Superconductivity in NbSe₂-based Ising-Type Superconductors — •Jozef Haniš¹, Marko Milivojević², Zoltan Tajkov³, and Martin Gmitra¹ — ¹Institute of Experimental Physics SAS Watsonova 47 040 01 Košice, Slovak Republic — ²Institute of Informatics, Slovak Academy of Sciences, Dúbravská cesta 9 845 07 Bratislava 45, Slovakia — ³Eötvös Loránd University, Pázmány Péter sétány 1/A, Budapest, Hungary

Topological superconductivity offers the promise of Majorana-bound states for fault-tolerant computation. We develop a symmetry-guided framework for superconducting pairing in Ising-type transition metal dichalcogenides, focusing on NbSe₂-based systems. We identify multiple topological phases–classified by Chern numbers and Z₂ invariants–enabled by spin-orbit-induced triplet pairing. We present topological phase diagrams for different doping regimes and discuss zigzag-ribbon band-structure calculations. This work was supported by the EU NextGenerationEU through the Recovery and Resilience Plan for Slovakia under the project No. 09I05-03-V02-00071, and the Slovak Academy of Sciences project IMPULZ IM-2021-42.

Keywords: Topological superconductivity; Ising superconductors; NbSe$_2$ monolayers; Spin-orbit coupling