Dynamic crystallography reveals spontaneous anisotropy in cubic GeTe

Simon A.J. Kimber, Jiayong Zhang, Charles H. Liang, Gian G. Guzmán-Verri, Peter B. Littlewood, Yongqiang Cheng, Douglas L. Abernathy, Jessica M. Hudspeth, Zhong Zhen Luo, Mercouri G. Kanatzidis, Tapan Chatterji, Anibal J. Ramirez-Cuesta, Simon J.L. Billinge