Nature CommunicationsOptical access of spin-polarized excited states in Cs(PbMgZnCd)Br3 nanocrystalsYu ZhangHaidi LiuShuchun ZhangZhengwei YangQingda ChangLixin XuYongli YanChuang Zhang2026-06-18Full textDOI https://doi.org/10.1038/s41467-026-74479-x