82 citations · 302 across the 21 of their papers we have counts for
22 papers
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…
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…
Unveiling the 5 electron hybridization process in UPdAl via ARPES and Time-resolved PES
Jiao-Jiao Song, Qi-Yi Wu, Chen Zhang +15
This study investigates the 5-electron-conduction electron hybridization process in the heavy fermion superconductor UPdAl using a combination of angle-resolved photoemi…
Exploring Fermi Surface Nesting and the Nature of Heavy Quasiparticles in the Spin-Triplet Superconductor Candidate CeRhAs
Bo Chen, Hao Liu, Qi-Yi Wu +15
In this study, we investigate the electronic structure of a spin-triplet superconductor candidate CeRhAs using high-resolution angle-resolved photoemission spectroscopy and…
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…
The Hidden Nematic Fluctuations in the Triclinic (Ca0.85La0.15)10(Pt3As8)(Fe2As2)5 Superconductor Revealed by Ultrafast Optical Spectroscopy
Qi-Yi Wu, Chen Zhang, Ze-Zhong Li +13
We reported the quasiparticle relaxation dynamics of an optimally doped triclinic iron-based superconductor (CaLa)(PtAs)(FeAs) with bul…
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 the charge density wave order in layered semiconductor EuTe4
Chen Zhang, Qi-Yi Wu, Ya-Hua Yuan +18
Layered tellurides have been extensively studied as a platform for investigating the Fermi surface (FS) nesting-driven charge density wave (CDW) states. EuTe4, one of quasi-two-dim…
Charge Density Wave order and electron-phonon coupling in ternary superconductor BiRhSe
Zi-Teng Liu, Chen Zhang, Qi-Yi Wu +19
The newly discovered ternary chalcogenide superconductor BiRhSe has attracted growing attention, which provides an opportunity to explore the interplay between charge d…
Ultrafast Optical Spectroscopy Evidence of Pseudogap and Electron-Phonon Coupling in an Iron-Based Superconductor KCaFeAsF
Chen Zhang, Qi-Yi Wu, Wen-Shan Hong +15
We use ultrafast optical spectroscopy to study the nonequilibrium quasiparticle relaxation dynamics of the iron-based superconductor KCaFeAsF with K. Our…
Dirac semimetal PdTe2 temperature-dependent quasiparticle dynamics and electron-phonon coupling
Shu-Yu Liu, Shuang-Xing Zhu, Qi-Yi Wu +15
Dirac semimetal PdTe2 single-crystal temperature-dependent ultrafast carrier and phonon dynamics were studied using ultrafast optical pump-probe spectroscopy. Two distinct carrier…
Temperature evolution of quasiparticle dispersion dynamics in semimetallic 1T-TiTe2 via high-resolution angle-resolved photoemission spectroscopy and ultrafast optical pump-probe spectroscopy
Shuang-Xing Zhu, Chen Zhang, Qi-Yi Wu +18
High-resolution angle-resolved photoemission spectroscopy and ultrafast optical pump-probe spectroscopy were used to study semimetallic 1T - TiTe2 quasiparticle dispersion and dyna…
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…
Spin Density Matrix For Spin-3/2 Particles
Jiao Jiao Song, Wan Ling Chang
The description of particles with spin can be attained by using a spin density matrix in high energy reaction. In this paper we present a parametrization of the spin density matrix…
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…
Polarization observables in annihilation to a baryon-antibaryon pair
Elisabetta Perotti, Göran Fäldt, Andrzej Kupść +2
Using the helicity formalism of Jacob and Wick we derive spin density matrices of baryon antibaryon pairs produced in annihilation. We consider the production of pairs wit…
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…