3 papers
cond-mat.str-el2026
Ultrafast Stiffening of the Lattice Potential and Metastable State Formation in 1-TiSe
Xue-Qing Ye, Hao Liu, Qi-Yi Wu +8
We use ultrafast optical spectroscopy to investigate the electronic and lattice dynamics of the charge-density wave (CDW) material 1-TiSe across various temperatures and pum…
cond-mat.str-el2025
Ultrafast photoinduced phase transition in the antiferromagnetic Dirac semimetal EuAgAs
Hao Liu, Chen Zhang, Qi-Yi Wu +12
We report the observation of a light-induced subpicosecond phase transition in the antiferromagnetic Dirac semimetal EuAgAs, achieved through ultrafast optical excitation. Using ul…
cond-mat.str-el2025
Anisotropic Hybridization Dynamics in the Quasi-One-Dimensional Kondo Lattice CeCoGa Revealed by Ultrafast Optical Spectroscopy
Ba-Lei Tan, Chen Zhang, Qi-Yi Wu +10
We investigate the ultrafast dynamics of the quasi-one-dimensional Kondo lattice CeCoGa using optical pump-probe spectroscopy. Time-resolved pump-probe reflectivity measure…