%0 Journal Article %A William M. Feldman %A Peter Morfe %T The occurrence of surface tension gradient discontinuities and zero mobility for Allen–Cahn and curvature flows in periodic media %J Interfaces and free boundaries %D 2023 %P 567-631 %V 25 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4171/ifb/491/ %R 10.4171/ifb/491 %F 10_4171_ifb_491