57 citations · 107 across the 2 of their papers we have counts for
3 papers
cond-mat.mtrl-sci2007★ 50 cited
Coherent Magnetization Precession in GaMnAs induced by Ultrafast Optical Excitation
J. Qi, Y. Xu, N. Tolk +3
We use femtosecond optical pulses to induce, control and monitor magnetization precession in ferromagnetic Ga0.965Mn0.035As. At temperatures below ~40 K we observe coherent oscilla…
cond-mat.mes-hall2007★ 57 cited
Near-bandgap wavelength-dependent studies of long-lived traveling coherent longitudinal acoustic phonon oscillations in GaSb/GaAs systems
J. K. Miller, J. Qi, Y. Xu +6
We report first studies of long-lived oscillations in optical pump-probe measurements on GaSb-GaAs heterostructures. The oscillations arise from a photogenerated coherent longitudi…
cond-mat.supr-con2003
Time-resolved dynamics of the superconducting two-gap state in MgB2 thin films
Y. Xu, M. Khafizov, L. Satrapinsky +3
Femtosecond pump-probe studies show that carrier dynamics in MgB2 films is governed by the sub-ps electron-phonon (e-ph) relaxation present at all temperatures, the few-ps e-ph pro…