5 papers
Ultrafast Fluence-Reversal Fingerprint of Fragile Kondo Hybridization in CePtIn
Xin-Yi Tian, Qi-Yi Wu, Chen Zhang +13
The emergence of heavy quasiparticles in a Kondo lattice is usually viewed as the formation of a low-energy hybridization gap. Whether this gap represents a rigid electronic struct…
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…
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…
Interplay of electron-phonon coupling, pseudogap, and superconductivity in CsCaFeAsF studied using ultrafast optical spectroscopy
Qi-Yi Wu, Chen Zhang, Bai-Zhuo Li +9
The quasiparticle relaxation dynamics of the iron-based superconductor CsCaFeAsF ( 29 K) were investigated using ultrafast optical spectroscopy. A pseud…
Exploring Intrinsic Magnetic Topological Insulators: The Case of EuInAs
Hao Liu, Qi-Yi Wu, Chen Zhang +10
In this study, ultrafast optical spectroscopy was employed to elucidate the intricate topological features of EuInAs, a promising candidate for a magnetic topological-cryst…