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MA: Fachverband Magnetismus
MA 47: Altermagnets V
MA 47.1: Vortrag
Donnerstag, 12. März 2026, 15:00–15:15, HSZ/0002
Electronic correlations and non-colinear spins driving chirality-induced spin selectivity — Jacek Herbrych1, Nicole Naber2, and •Maria Daghofer2 — 1Wroclaw University of Science and Technology, Wroclaw, Poland — 2FMQ, Universität Stuttgart, Stuttgart, Germany
Starting from a non-interacting p-orbital model for helical organic molecules, we look at the impact of onsite Hubbard and Hund’s-rule interactions. We find that they can induce an orbital-selective Mott transition as well as a block spiral with non-colinear helical magnetic order. We then investigate the resulting chiral bands and find them to be partially spin polarized, a manifestation of p-wave magnetism. Using density-matrix renormalization group, cluster perturbation theory and Monte-Carlo methods, we find that small spin-orbit coupling together with strong correlations robustly leads to spin-polarized bands, even at moderately high temperature and for short correlation lengths. We thus propose this combination as an explanation of chirality-induces spin selectivity and also discuss the interplay of such non-colinear spin patterns with magnetised leads.
Keywords: p-wave magnetism; chirality-induced spin selectivity; spin spirals