Chirality, Spin, and Charge Interactions at Magnet-chiral Molecule Interface in Chirality-Induced Spin Selectivity
ORAL
Abstract
Chirality-induced spin selectivity (CISS) generates giant spin polarization in transport through chiral molecules, paving the way for novel spintronic devices and enantiomer separation. Unlike conventional transport, CISS magnetoresistance (MR) violates Onsager’s reciprocal relation and exhibits significant resistance changes when reversing electrode magnetization at zero bias, with underlying mechanism remains unresolved. In this work [1], we propose that CISS MR originates from charge trapping that modifies the electron tunneling barrier and circumvents Onsager’s relation, distinct from spin polarization-based models. Our theory predicts exotic phenomena beyond the conventional CISS framework, including the chirality-induced one-way MR realized by our recent experiment on chiral gold nanoparticles [2].
*B.Y. acknowledges the financial support by the MINERVA Stiftung, the European Research Council (ERC Consolidator Grant "NonlinearTopo", No. 815869), the Minerva Weizmann Programme, and the Israel Science Foundation (ISF, No. 2932/21). K.S. and K.Z. are supported in part by the Office of Naval Research (MURI N00014-20-1-2479). This work is also supported by the National Natural Science Foundation of China (Nos. 22374144 to W.N., 22374109 and 21974102 to G.C., 22072144 to F.W., 22102171 to Y.T., 22373026 to Z.X.), National Key R&D Program of China (2023YFA1407100 to Z.X.), and Guangdong Science and Technology Department (2021B0301030005, STKJ2023072, and GDZX2304005 to Z.X.).
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Publication:[1] Y. Zhao, K. Zhang, K., J. Xiao, K. Sun, B. Yan, Nat Commun 16, 37 (2025). [2] Wu et al. arXiv:2408.03501 (2024).
