Long-Lived Spin Coherence in a Densely Populated Stoichiometric Rare-Earth CrystalRemoveMucheng Guo, Zhehao Xu, Weiye Sun, Wanting Xiao, Zongfeng Li, Matthew J. Sellars, Rose L. Ahlefeldt, Fudong Wang, Shuping Liu, and Manjin ZhongPhys. Rev. Lett. 137, 153601 (2026)
