Dresden 2026 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 39: 2D semiconductors VII – CrSBr and related heterostructures

HL 39.2: Vortrag

Donnerstag, 12. März 2026, 09:45–10:00, POT/0081

Proximity-Induced Raman Signatures in a NbSe₂-CrSBr Superconductor-Magnet Heterostructure — •Elena Vinnemeier¹, Jan-Hendrik Larusch¹, Kai Rossnagel², and Ursula Wurstbauer¹ — ¹Institute of Physics, University of Münster, Münster, Germany — ²Institute of Experimental and Applied Physics, Kiel University, Kiel, Germany

Interfacing superconducting NbSe₂ with the antiferromagnetic semiconductor CrSBr provides a van der Waals platform to study proximity effects in quantum devices. The superconductivity-magnetism interplay enables Josephson junctions and superconducting quantum interference devices with field-tunable critical current and spin filtering. We study proximity effects of the spin ordered CrSBr on the specific collective modes in NbSe₂ in the superconducting phase at 4K and the charge-density wave phase at 15K. A magnetic field tunes CrSBr from antiferromagnetic to ferromagnetic order. The Raman response of the heterointerface, relative to bare NbSe₂, reveals proximity effects from the ferromagnetic CrSBr layer at the interface. Modifications of the NbSe₂ collective excitation spectrum demonstrate strong interaction between the proximitized magnetic order in CrSBr and correlated phases in NbSe₂. This project was supported by the EIC pathfinder grant 101130224 "JOSEPHINE".

Keywords: TMDC; semiconductor; superconductivity; magnetic