SPICE Workshop on Quantum materials and quantum information science May 19th - 21st, 2026
Aisha Aqeel
Chiral magnetic insulators host non-collinear spin textures—such as helices, spirals, and skyrmions—that emerge from competing interactions in systems without inversion symmetry. The twisting of these magnetic textures may be topologically trivial or nontrivial, but universally they support collective magnetic excitations spanning frequencies from a few GHz to several THz. Combined with their intrinsically low magnetic damping, these materials provide a promising platform for coherent magnon dynamics and spin-based technologies. In this talk, I will discuss recent progress in understanding magnetization dynamics [1] and spin transport in the chiral magnet Cu₂OSeO₃ and related Cu-based non-collinear oxides. Spin Hall magnetoresistance [2] and the spin Seebeck effect [3] are used as complementary probes to access interfacial spin transmission and thermally driven magnon currents in insulating magnets. Our results demonstrate that spin-current transport provides an all-electrical method to detect and distinguish different non-collinear magnetic states.
References:
[1] Lee, ...Aqeel, et al., Nature materials 23 (1), 79-87 (2024)
[2] Aqeel, et al., Science and Technology of Advanced Materials 26 (1), 2457320 (2025)
[3] Aqeel, et al., Physical Review B 103 (10), L100410 (2021)