Emergent Heavy-Fermion Physics in a Family of Topological Insulators R AsS ( R = Y, La, and Sm) - Iñigo Robredo; Yuan Fang; Lei Chen; Nazar Zaremba; Yurii Prots; Mitja Krnel; Markus König; Mikel I. Iraola; Thomas Doert; Jeroen van den Brink; Claudia Felser; Qimiao Si; et al. (Journal of the American Chemical Society, 2026)