The nature of dynamic local order in CH3NH3PbI3 and CH3NH3PbBr3
Nicholas J. Weadock, Tyler C. Sterling, Julian A. Vigil, Aryeh Gold-Parker, Ian C. Smith, Ballal Ahammed, Matthew J. Krogstad, Feng Ye, David Voneshen, Peter M. Gehring, Andrew M. Rappe, Hans Georg Steinrück, Elif Ertekin, Hemamala I. Karunadasa, Dmitry Reznik, Michael F. Toney