Coherent phonon flatband generated in GaAs/AlAs superlattices via layer-selective optical pumping

Z Zefang Ye T Travis D. Frazer H Haoran Cui X Xun Jia F Feng He (Institute of Environmental Processes and Pollution Control, School of Environment and Ecology) T Tengfei Ma S Stephen March S Seth R. Bank K Katherine J. Harmon (Applied Physics Graduate Program) Z Zhan Zhang J Jan Ravnik M Mathias Sander Y Yunpei Deng R Roman Mankowsky H Henrik Lemke H Haidan Wen (Advanced Photon Source, Argonne National Laboratory) S Stephan O. Hruszkewycz S Simon Gerber Y Yan Wang Y Yaguo Wang Y Yue Cao (Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences)