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TT: Fachverband Tiefe Temperaturen

TT 66: 2D Materials: Electronic structure, excitations, etc. – Poster (joint session O/TT)

TT 66.19: Poster

Mittwoch, 11. März 2026, 18:00–20:00, P2

Magnetic properties of V-doped WSe2 — •Jules M. Knebusch^1,2, Jana Kähler^1,2, Matthias Kalläne^1,2,3, Robert Zierold⁴, Tim Riedel^1,2, Adina Timm^1,2, Robert H. Blick⁴, and Kai Rossnagel^1,2,3 — ¹IEAP, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany — ²RHL, Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany — ³KiNSIS, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany — ⁴CHyN, Universität Hamburg, 22761 Hamburg, Germany

Spintronics holds promise for highly efficient classical and quantum computing and is therefore considered a key technology for future innovation. Pristine tungsten diselenide (WSe₂), known as a semiconductor with a quasi-two-dimensional hexagonal 2H structure, is expected to transform into a room-temperature dilute ferromagnetic semiconductor upon vanadium doping. This makes it a highly attractive candidate for spintronic applications. Density functional theory calculations and scanning transmission electron microscopy studies support this assumption, and RKKY interactions are predicted to be the driving mechanism. Pristine WSe₂ and vanadium-doped WSe₂ crystals were synthesized in separate in-house batches using the chemical vapor transport (CVT) method. The doped samples were grown with varying nominal concentrations of V intended to induce substitutional doping at the tungsten sites. The samples were investigated using a vibrating-sample magnetometer (VSM). The results provide insight into the magnetic characteristics of the doped material compared to the pristine reference crystal.

Keywords: TMDC; magnetic semiconductor