30 citations · 264 across the 28 of their papers we have counts for
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Cleavage-History-Dependent Low-Temperature ARPES Spectra of Charge-Ordered EuAl
Hao Liu, Bo Chen, Chen Zhang +9
Charge ordering in EuAl has been widely discussed in connection with band reconstruction, magnetism, and topological electronic states, yet the microscopic origin of the comple…
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…
Nonthermal melting and density wave instability coupled to the lattice in LaNiO
Chen Zhang, Lixing Chen, Qi-Yi Wu +15
The recent discovery of high-temperature superconductivity in pressurized nickelates has renewed interest in the broken-symmetry states of their ambient-pressure parent phases, whe…
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…
Unraveling Magneto-Phononic Coupling and Photoinduced Magnetic Control in Antiferromagnetic Kondo Semimetal CeBi
Xu-Chen Nie, Chen Zhang, Qi-Yi Wu +9
We report an ultrafast optical spectroscopy study on the coherent phonon dynamics in the topological semimetal CeBi and its nonmagnetic isostructural compound LaBi, revealing profo…
Ultrafast charge-transfer dynamics in CaCuOCl from time-resolved optical reflectivity
Haiyun Huang, Xiu Zhang, Junzhi Zhu +7
We employ time-resolved optical reflectivity to investigate the ultrafast dynamics of the charge-transfer gap (CTG) in a parent cuprate compound CaCuOCl (CCOC). We obse…
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…
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…
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…
Relocalization of Uranium 5f Electrons in Antiferromagnetic Heavy Fermion Superconductor UPdAl: Insights from Angle-Resolved Photoemission Spectroscopy
Jiao-Jiao Song, Chen Zhang, Qi-Yi Wu +15
We investigate the antiferromagnetic heavy fermion superconductor UPdAl, employing angle-resolved photoemission spectroscopy to unravel the complex electronic structure of…
Experimental observation of the significant difference between surface and bulk Kondo processes in Kondo lattice YbCuSi
in-Zou Zhao, Jiao-Jiao Song, Qi-Yi Wu +11
Synchrotron-based angle-resolved photoemission spectroscopy was employed to investigate the temperature evolution of the Yb 4f spectral for surface and bulk in the Kondo lattice Yb…
Itinerant to relocalized transition of f electrons in the Kondo insulator CeRu4Sn6
Fan-Ying Wu, Qi-Yi Wu, Chen Zhang +14
The three-dimensional electronic structure and the nature of Ce 4f electrons of the Kondo insulator CeRu4Sn6 are investigated by angle-resolved photoemission spectroscopy, utilizin…
Nesting-driven antiferromagnetic order in Kondo lattice CePd5Al2
Chen Zhang, Ya-Hua Yuan, Jiao-Jiao Song +13
We investigated the electronic structure of the antiferromagnetic Kondo lattice CePd5Al2 using high-resolution angle-resolved photoemission spectroscopy. The experimentally determi…
Coupling of optical phonons with Kondo effect and magnetic orders in antiferromagnetic Kondo lattice CeAuSb
Yin-Zou Zhao, Qi-Yi Wu, Chen Zhang +14
Ultrafast optical spectroscopy was used to investigate the ultrafast quasiparticle dynamics of antiferromagnetic Kondo lattice CeAuSb as a function of temperature and fluence.…
Angle-resolved photoemission spectroscopy study of crystal electric field in heavy fermion compound CePt2In7
Yang Luo, Chen Zhang, Qi-Yi Wu +19
The three-dimensional electronic structure and Ce 4f electrons of the heavy fermion superconductor CePt2In7 is investigated. Angle-resolved photoemission spectroscopy using variabl…
Crystal electric field splitting and f-electron hybridization in heavy fermion CePt2In7
Yu-Xia Duan, Cheng Zhang, Jan Rusz +14
We use high-resolution angle-resolved photoemission spectroscopy to investigate the electronic structure of the antiferromagnetic heavy fermion compound CePt2In7, which is a member…
Ultrafast hot carrier dynamics of ZrTe from time-resolved optical reflectivity
Xiu Zhang, Hai-Ying Song, X. C. Nie +8
We investigate the hot carrier dynamics of ZrTe by ultrafast time-resolved optical reflectivity. Our results reveal a phonon-mediated across-gap recombination, consistent with…
Three-Dimensional Fermi-Surface and Electron-Phonon Coupling in Semimetallic 1T-TiTe2 studied by Angle-Resolved Photoemission Spectroscopy
Xiao-Fang Tang, Yu-Xia Duan, Fan-Ying Wu +10
We present an investigation on electronic structure of 1T-TiTe2 material via high-resolution angle-resolved photoemission spectroscopy (ARPES), utilizing tunable photon energy exci…
Photoinduced two-step insulator-metal transition in Ti4O7 by ultrafast time-resolved optical reflectivity
X. C. Nie, Hai-Ying Song, Xiu Zhang +6
We report on systematic investigation of hot carrier dynamics in Ti4O7 by ultrafast time-resolved optical reflectivity. We find the transient indication for its two-step insulator-…
Transient transition from free carrier metallic state to exciton insulating state in GaAs by ultrafast photoexcitation
X. C. Nie, H. Y. Liu, Xiu Zhang +6
We present systematic studies of the transient dynamics of GaAs by ultrafast time-resolved optical reflectivity. In photo excited non-equilibrium states, we found a sign reverse in…