Resolving Internal Magnetic Structures of Skyrmions by Lorentz Electron Ptychography. (August 2019) - Chen, Zhen; Turgut, Emrah; Jiang, Yi; Nguyen, Kayla X.; Correa, Gabriela C.; Stolt, Matthew J.; Jin, Song; Ralph, Daniel C.; Fuchs, Gregory D.; Muller, David A.