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Twisted molecular wires polarize spin currents at room temperature.

ABSTRACT: A critical spintronics challenge is to develop molecular wires that render efficiently spin-polarized currents. Interplanar torsional twisting, driven by chiral binucleating ligands in highly conjugated molecular wires, gives rise to large near-infrared rotational strengths. The large scalar product of the electric and magnetic dipole transition moments ([Formula: see text]), which are evident in the low-energy absorptive manifolds of these wires, makes possible enhanced chirality-induced spin selectivity-derived spin polarization. Magnetic-conductive atomic force microscopy experiments and spin-Hall devices demonstrate that these designs point the way to achieve high spin selectivity and large-magnitude spin currents in chiral materials.

SUBMITTER: Ko CH

PROVIDER: S-EPMC8833206 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature

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Twisted molecular wires polarize spin currents at room temperature.

Ko Chih-Hung CH Zhu Qirong Q Tassinari Francesco F Bullard George G Zhang Peng P Beratan David N DN Naaman Ron R Therien Michael J MJ

Proceedings of the National Academy of Sciences of the United States of America 20220201 6

A critical spintronics challenge is to develop molecular wires that render efficiently spin-polarized currents. Interplanar torsional twisting, driven by chiral binucleating ligands in highly conjugated molecular wires, gives rise to large near-infrared rotational strengths. The large scalar product of the electric and magnetic dipole transition moments ([Formula: see text]), which are evident in the low-energy absorptive manifolds of these wires, makes possible enhanced chirality-induced spin s ...[more]

PMID: 35115404

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