September 17, 2019
Author(s)
M. Songvilay, Nathan Giles-Donovan, M. Bari, Z.-G. Ye, J. L. Minns, M. A. Green, Guangyong Xu, Peter M. Gehring, K. Schmalzl, William D. Ratcliff, Craig Brown, D. Chernyshov, W. van Beek, Sandy Cochran, Christopher Stock
We apply neutron spectroscopy to investigate the transverse acoustic phonons in the lead halide CsPbBr3 near the three zone boundaries of the cubic Pm3m Brillouin zone at QX = (2,1/2,0), QM = (3/2,1/2,0), and QR = (1/2,1/2,3/2). CsPbBr3 undergoes two