Publications [#376669] of David N. Beratan

Journal Articles

  1. Sun, R; Park, KS; Comstock, AH; McConnell, A; Chen, Y-C; Zhang, P; Beratan, D; You, W; Hoffmann, A; Yu, Z-G; Diao, Y; Sun, D, "Inverse chirality-induced spin selectivity effect in chiral assemblies of π-conjugated polymers.", Nature materialsJune,, 2024, 23(6), 782-789 [doi].
    (last updated on 2024/07/16)

    Abstract:
    Coupling of spin and charge currents to structural chirality in non-magnetic materials, known as chirality-induced spin selectivity, is promising for application in spintronic devices at room temperature. Although the chirality-induced spin selectivity effect has been identified in various chiral materials, its Onsager reciprocal process, the inverse chirality-induced spin selectivity effect, remains unexplored. Here we report the observation of the inverse chirality-induced spin selectivity effect in chiral assemblies of π-conjugated polymers. Using spin-pumping techniques, the inverse chirality-induced spin selectivity effect enables quantification of the magnitude of the longitudinal spin-to-charge conversion driven by chirality-induced spin selectivity in different chiral polymers. By widely tuning conductivities and supramolecular chiral structures via a printing method, we found a very long spin relaxation time of up to several nanoseconds parallel to the chiral axis. Our demonstration of the inverse chirality-induced spin selectivity effect suggests possibilities for elucidating the puzzling interplay between spin and chirality, and opens a route for spintronic applications using printable chiral assemblies.