Spin Decoherence Dynamics of Er3+ in CeO2 FilmsRemoveSagar Kumar Seth, Jonah Nagura, Vrindaa Somjit, Aneesh Bapat, Xinhao Li, Gregory D. Grant, Ignas Masiulionis, Xu Han, F. Joseph Heremans, Giulia Galli, David D. Awschalom, Supratik Guha, and Jiefei ZhangPhys. Rev. Lett. 135, 266901 (2025)