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HL: Fachverband Halbleiterphysik
HL 39: 2D semiconductors VII – CrSBr and related heterostructures
HL 39.4: Talk
Thursday, March 12, 2026, 10:15–10:30, POT/0081
Optical Probing of Interfacial Magnetic Properties of the CrSBr-MnPS3 hetero-interface — •Thomas Kliewer1, Aleksandra Łopion1, Pierre-Maurice Piel1, Jan-Hendrik Larusch1, Zdeněk Sofer2, and Ursula Wurstbauer1 — 1University of Münster, Germany — 2University of Chemistry and Technology Prague, Czech Republic
CrSBr and MnPS3 are both 2D antiferromagnetic semiconductors with different magnetic and optical properties. MnPS3 has out-of-plane spin alignment while CrSBr’s spins are aligned in-plane [1,2]. Interfacing these two materials is expected to result in complex interfacial spin-alignment, presumably with the stabilization of a non-collinear magnetic phase at the interface. CrSBr exhibits strong excitonic features coupled to the magnetic order [3]. This is used as a probe for the magnetic situation of the MnPS3-CrSBr interface. The structures are characterized by polarization-resolved Raman spectroscopy measurements and the interfacial magnetic properties are probed by low-temperature magneto-photoluminescence and reflectance spectroscopies. We observed a peculiar influence of MnPS3 on the optical response of CrSBr. A proximity-induced modification of the magnetic properties of CrSBr interfaced with MnPS3 seems to induce long-range order, since the impact is observable on the CrSBr flake more than 10 µm away from the interfaced region. Our observations might be connected to the stabilization of an intermediate ordered magnetic state in CrSBr. [1] Wilson, et al. Nat. Mat. 20.12 (2021), [2] Kobets, et al. Low Temp. Phys. 35.12 (2009), [3] Heißenbüttel, et al. Phys. Rev. B 111.7 (2025)
Keywords: CrSBr; MnPS3; Antiferromagnet; Interface; 2D semiconductor