Speaker
Dr
W S Lee
(Stanford Institute for Materials and Energy Science, SLAC National Accelerator Lab, USA)
Description
In the striped nickelate La2-xSrxNiO4, spin order coexists with charge order, whose periodicity is half of spin order. So far, most of the studies on the stripe phase were performed in the thermal equilibrium state by varying temperatures; the dynamics of stripe phase in the time domain when the system is driven-out-of-equilibrium has not yet been studied. Using the x-ray free electron laser (XFEL) at the Linac Coherent Light Source (LCLS), we performed time resolved optical-pump and resonant soft x-ray diffraction probe experiments to study the dynamics of the spin and charge order. The dynamics are found to be distinct from the equilibrium properties. Through the analysis of the recovery time scale, the spin-charge order coupling and the vector nature of the spin order can be elucidated.
Please specify poster or talk
Talk
Please specify the session
RIXS
Primary author
Dr
W S Lee
(Stanford Institute for Materials and Energy Science, SLAC National Accelerator Lab, USA)
