Author(s): Qianli Ma, Brianna R. Billingsley, Alin Niraula, Madalynn Marshall, David A. Dahlbom, Yiqing Hao, Daniel M. Pajerowski, Alexander I. Kolesnikov, Xiaojian Bai, Cristian D. Batista, Tai Kong, and Huibo Cao We report a comprehensive study on the origin of the enigmatic disordered ground state within the Shastry-Sutherland lattice, ${\mathrm{BaCe}}_{2}{\mathrm{ZnS}}_{5}$, at low temperatures. The magnetization and heat capacity data show a lack of magnetic ordering down to 73 mK. We deploy a localized s… [Phys. Rev. Lett. 137, 086701] Published Mon Aug 17, 2026