Many-body–localized discrete time crystal with a programmable spin-based quantum simulator. - Randall, J.; Bradley, C. E.; van der Gronden, F. V.; Galicia, A.; Abobeih, M. H.; Markham, M.; Twitchen, D. J.; Machado, F.; Yao, N. Y.; Taminiau, T. H. (Science (pre-March 2025), 2021)