Interplay Between Lone Pair Stereochemical Activity and Structural Anisotropy Drives Ultralow Thermal Conductivity in Layered AGeS3 (A = Pb, Sn) Metal Sulfides - Paribesh Acharyya; Koushik Pal; Xingchen Shen; Bin Zhang; Bernard Raveau; Sara Passuti; Philippe Boullay; Pierric Lemoine; Bernard Malaman; Christophe Candolfi; Adèle Renaud; Xiaoyuan Zhou; et al. (Journal of the American Chemical Society, 2025)