Author(s): Xiaoping Li, Wenfeng Fan, Hang Gao, Shimiao Fan, Qi Yuan, Zhihong Wu, and Wei Quan The magnetic dynamics at the nanoscale interface of amorphous insulators sit at the intersection of advancing ultrasensitive quantum sensing and understanding condensed matter physics. While noble-gas spin relaxation offers a powerful approach to probe these interfaces, it has long been restricted t… [Phys. Rev. Lett. 137, 123201] Published Mon Sep 14, 2026