Inter-atomic spin–orbit interaction in a p-orbital helical atomic chainTakemitsu Kato, Yasuhiro Utsumi, Ora Entin-Wohlman and Amnon AharonyEur. Phys. J. Spec. Top., (2025) 1-9DOI: https://doi.org/10.1140/epjs/s11734-025-02065-1