Dresden 2026 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 22: Superconductivity – Poster I
TT 22.2: Poster
Montag, 9. März 2026, 18:00–20:00, P1
Superconducting proximity effect in non-collinear anti-ferromagnets — •Anshuman Padhi1, Prajwal Rigvedi Madhusudan Rao1, Ajin Joy2, Ajesh K Gopi1, Jiho Yoon1, Jaechun Jeon1, Banabir Pal1, and Stuart S. P. Parkin1 — 1Max Planck Institute of Microstructure Physics, 06120, Halle (Saale), Germany — 2Indian Institute of Science, 560012, Bengaluru, India
Triplet Cooper-pair generation in superconducting hybrids is typically achieved using multilayer ferromagnetic structures with non-collinear magnetization, but such systems restrict material flexibility and can introduce vortex-related artefacts. Non-collinear antiferromagnets (NCAFMs) provide a promising alternative: their intrinsic spin textures and residual uncompensated moments can support long-range superconducting correlations without complex magnetic stacking. Here, we interface superconducting thin films (thickness lesser than the coherence length) with two magnetic phases of a Mn-based antiperovskite and track how their critical temperature evolves under magnetic fields of various orientations. The symmetry and spin configuration of the NCAFMs are expected to modify the Andreev spectrum at the interface and thereby affect the robustness of the superconducting condensate, a common indicator of triplet pairing. We further attempt to study the interface using tunneling spectroscopy and explore possible signatures of spin-dependent Andreev states.
Keywords: Proximity effect; Spin-triplet Cooper pairing; Non-collinear antiferromagnets