Speaker
Rob Moore
(SLAC National Accelerator Lab.)
Description
TbTe3 is a model system that exhibits a two dimensional incommensurate charge density wave state due to the Fermi surface nesting. Ultrafast pump-probe dynamics of the CDW state in such system has attracted significant interest in the field. Although coherent phonon mode and the amplitude mode, a collective excitation of the CDW sate, has been observed by time-resolved pump-probed reflectivity and ARPES measurements, direct observation of the CDW state through ultrafast x-ray diffraction is not yet available. Using the ultrafast XFEL pulse, we performed resonant diffraction experiment on the TbTe3 to monitor the ultrafast response of the CDW diffraction peak. Results and comparison with the information obtained by time-resolved ARPES will be discussed.
Author
Wei-Sheng Lee
(SLAC National Accelerator Lab.)
Co-authors
D. Lu
(SLAC National Accelerator Lab.)
D. Reis
(SLAC National Accelerator Lab)
I.R. Fisher
(Stanford University)
J. Turner
(LCLS, SLAC National Accelerator Lab.)
J.H Chu
(Stanford University)
L. Patthey
(SLS, Paul Scherrer Institut)
M. Trigo
(SLAC National Accelerator Lab.)
O. Krupin
(SLAC National Accelerator Lab)
P. Kirchmann
(SLAC National Accelerator Lab.)
Rob Moore
(SLAC National Accelerator Lab.)
T. P. Devereaux
(SLAC National Accelerator Lab.)
W. Schlotter
(LCLS, SLAC National Accelerator Lab.)
Y. D. Chuang
(ALS, Lawrence Berkeley Lab)
Z. Hussain
(ALS, Lawrence Berkeley Lab.)
Z. X. Shen
(SLAC National Accelerator Lab.)
