Publication date: 11th March 2026
Electrons moving through a chiral medium can acquire preferential spin states, leading to spin polarization. This phenomenon is known as chirality-induced spin selectivity (CISS) and has applications in low-power spintronic devices, due to its ability to create spin-polarized electrons without the need of external magnets. [1] While spin-filtering has been experimentally observed, a unified theoretical framework for CISS is still an open challenge. [2,3]
In this contribution, I will present preliminary calculations on the chirality-induced effects in various chiral 2D metal-halide perovskites (MHPs). DFT calculations allow to address the interplay and effect of spin-orbit coupling and chiral organic medium on the spin splitting. Although still at an early stage, information from band structures and spin-resolved calculations can provide atomic-level insights on the mechanisms contributing to the observed spin-selectivity.
References:
[1] K. Ray, S.P. Ananthavel, D.H. Waldeck, R. Naaman, Asymmetric Scattering of Polarized Electrons by Organized Organic Films of Chiral Molecules, 1999.
[2] Lu, H., Wang, J., Xiao, C., Pan, X., Chen, X., Brunecky, R., ... & Vardeny, Z. V. (2019). Spin-dependent charge transport through 2D chiral hybrid lead-iodide perovskites. Science advances, 5(12), eaay0571.
[3] Fransson, J. (2025). Should it really be that hard to model the chirality induced spin selectivity effect?. APL Computational Physics, 1(2).
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