Magnetochiral charge pumping due to charge trapping and skin effect in chirality-induced spin selectivity.

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, exhibiting significant resistance changes when reversing electrode magnetization at zero bias. However, its underlying mechanism remains unresolved. In this work, we propose that CISS MR originates from charge trapping that modifies the electron tunneling barrier and circumvents Onsager's relation, distinct from previous spin polarization-based models. Charge trapping is governed by the non-Hermitian skin effect, where dissipation leads to exponential wavefunction localization at the ferromagnet-chiral molecul

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC11697245 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature