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Doping Evolution of Nodal Electron Dynamics in Trilayer Cuprate Superconductor BiSrCaCuO Revealed by Laser-Based Angle-Resolved Photoemission Spectroscopy
Hao Chen, Jumin Shi, Xiangyu Luo +22
The doping evolution of the nodal electron dynamics in the trilayer cuprate superconductor BiSrCaCuO (Bi2223) is investigated using high-resolution laser-b…
Negligible Normal Fluid in Superconducting State of Heavily Overdoped BiSrCaCuO Detected by Ultra-Low Temperature Angle-Resolved Photoemission Spectroscopy
Chaohui Yin, Qinghong Wang, Yuyang Xie +23
In high temperature cuprate superconductors, it was found that in the overdoped region the superfluid density decreases with the increase of hole doping. One natural question is wh…
Intrinsic Electronic Structure and Nodeless Superconducting Gap of Observed by Spatially-Resolved Laser-Based Angle Resolved Photoemission Spectroscopy
Shuaishuai Li, Taimin Miao, Chaohui Yin +17
The spatially-resolved laser-based high resolution ARPES measurements have been performed on the optimally-doped (Y123) superconductor. For the f…
Orbital-Dependent Electron Correlation in Double-Layer Nickelate La3Ni2O7
Jiangang Yang, Hualei Sun, Xunwu Hu +23
The latest discovery of high temperature superconductivity near 80K in La3Ni2O7 under high pressure has attracted much attention. Many proposals are put forth to understand the ori…
Observation of Flat Band, Dirac Nodal Lines and Topological Surface States in Kagome Superconductor CsTiBi
Jiangang Yang, Yuyang Xie, Zhen Zhao +23
A kagome lattice of 3d transition metals hosts flat bands, Dirac fermions and saddle points. It provides a versatile platform for achieving topological superconductivity, anomalous…
Nodal s Pairing Symmetry in an Iron-Based Superconductor with only Hole Pockets
Dingsong Wu, Junjie Jia, Jiangang Yang +26
The origin of the high temperature superconductivity in the iron-based superconductors remains elusive after being extensively studied for more than a decade. Determination of the…
Electronic Origin of High-Tc Maximization and Persistence in Trilayer Cuprate Superconductors
Xiangyu Luo, Hao Chen, Yinghao Li +18
In high temperature cuprate superconductors, it was found that the superconducting transition temperature Tc depends on the number of CuO2 planes (n) in the structural unit and the…
Conservation of the particle-hole symmetry in the pseudogap state in optimally-doped Bi2Sr2CuO6+δ superconductor
Hongtao Yan, Qiang Gao, Chunyao Song +10
The pseudogap state is one of the most enigmatic characteristics in the anomalous normal state properties of the high temperature cuprate superconductors. A central issue is to rev…
Ubiquitous Coexisting Electron-Mode Couplings in High Temperature Cuprate Superconductors
Hongtao Yan, Jin Mo Bok, Junfeng He +22
In conventional superconductors, the electron-phonon coupling plays a dominant role in pairing the electrons and generating superconductivity. In high temperature cuprate supercond…
Genuine Electronic Structure and Superconducting Gap Structure in (BaK)FeAs Superconductor
Yongqing Cai, Jianwei Huang, Taimin Miao +16
The electronic structure and superconducting gap structure are prerequisites to establish microscopic theories in understanding the superconductivity mechanism of iron-based superc…
Evidence for bosonic mode coupling in electron dynamics of LiFeAs superconductor
Cong Li, Guangyang Dai, Yongqing Cai +15
Super-high resolution laser-based angle-resolved photoemission measurements are carried out on LiFeAs superconductor to investigate its electron dynamics. Three energy scales at $\…
Spectroscopic Evidence of Bilayer Splitting and Interlayer Pairing in an Iron Based Superconductor
Dingsong Wu, Wenshan Hong, Chenxiao Dong +27
In high temperature cuprate superconductors, the interlayer coupling between the CuO planes plays an important role in dictating superconductivity, as indicated by the sensitiv…
Evidence for an Additional Symmetry Breaking from Direct Observation of Band Splitting in the Nematic State of FeSe Superconductor
Cong Li, Xianxin Wu, Le Wang +26
The iron-based superconductor FeSe has attracted much recent attention because of its simple crystal structure, distinct electronic structure and rich physics exhibited by itself a…
Selective Hybridization between Main Band and Superstructure Band in BiSrCaCuO Superconductor
Qiang Gao, Hongtao Yan, Jing Liu +20
High-resolution laser-based angle-resolved photoemission measurements have been carried out on BiSrCaCuO (Bi2212) and BiSrLaCuO (Bi2201)…
Evolution of Incommensurate Superstructure and Electronic Structure with Pb Substitution in (BiPb)SrCaCuO Superconductors
Jing Liu, Lin Zhao, Qiang Gao +24
High-quality BiPbSrCaCuO (Bi2212) single crystals have been successfully grown by the traveling solvent floating zone technique with a wide range of P…
Distinct Superconducting Gap on Two Bilayer-Split Fermi Surface Sheets in Superconductor
Ping Ai, Qiang Gao, Jing Liu +13
High resolution laser-based angle-resolved photoemission measurements were carried out on an overdoped superconductor with a Tc of 75 K. Two Fermi surface s…
Emergence of Superconductivity from Fully Incoherent Normal State in an Iron-Based Superconductor (BaK)FeAs
Jianwei Huang, Lin Zhao, Cong Li +20
In unconventional superconductors, it is generally believed that understanding the physical properties of the normal state is a pre-requisite for understanding the superconductivit…
Disappearance of Superconductivity and a Concomitant Lifshitz Transition in Heavily-Overdoped Bi2Sr2CuO6 Superconductor Revealed by Angle-Resolved Photoemission Spectroscopy
Ying Ding, Lin Zhao, Hongtao Yan +22
By partially doping Pb to effectively suppress the superstructure in single-layered cuprate Bi2Sr2CuO6+δ(Pb-Bi2201) and annealing them in vacuum or in high pressure oxygen atmosphe…
Disappearance of Nodal Gap across the Insulator-Superconductor Transition in a Copper-Oxide Superconductor
Yingying Peng, Jianqiao Meng, Daixiang Mou +16
The parent compound of the copper-oxide high temperature superconductors is a Mott insulator. Superconductivity is realized by doping an appropriate amount of charge carriers. How…
Coexistence of Two Sharp-Mode Couplings and Their Unusual Momentum Dependence in the Superconducting State of Bi2Sr2CaCu2O8+d Superconductor Revealed by Laser-Based Angle-Resolved Photoemission
Junfeng He, Wentao Zhang, Jin Mo Bok +20
Super-high resolution laser-based angle-resolved photoemission measurements have been carried out on Bi2Sr2CaCu2O8+d (Bi2212) superconductors to investigate momentum dependence of…
Growth, Characterization and Fermi Surface of Heavy Fermion CeCoIn5 Superconductor
Xiaowen Jia, Yan Liu, Li Yu +21
High quality single crystals of heavy Fermion CeCoIn5 superconductor have been grown by flux method with a typical size of (1~2)mm x (1~2)mm x ~0.1 mm. The single crystals are char…
Common Fermi Surface Topology and Nodeless Superconducting Gap in K0.68Fe1.79Se2 and (Tl0.45K0.34)Fe1.84Se2 Superconductors Revealed from Angle-Resolved Photoemission Spectroscopy
Lin Zhao, Daixiang Mou, Shanyu Liu +22
We carried out high resolution angle-resolved photoemission measurements on the electronic structure and superconducting gap of K_0.68Fe_1.79Se_2 (T_c=32 K) and (Tl_0.45K_0.34)Fe_1…
Distinct Fermi Surface Topology and Nodeless Superconducting Gap in (Tl0.58Rb0.42)Fe1.72Se2 Superconductor
Daixiang Mou, Shanyu Liu, Xiaowen Jia +19
High resolution angle-resolved photoemission measurements have been carried out to study the electronic structure and superconducting gap of the (TlRb)Fe…