Random singlet physics in the exchange-disordered two-dimensional triangular material YbCu1.14Se2RemoveCaitlin S. T. Kengle, S. M. Thomas, R. Movshovich, Shengzhi Zhang, Eun Sang Choi, Minseong Lee, P. F. S. Rosa, and A. O. ScheiePhys. Rev. B 113, 134427 (2026)