Coexistence of near- Flat Band and Van Hove Singularity in a Two-Phase Superconductor

X Chen, L Wang, J Ishizuka, R Zhang, K Nogaki… - Physical Review X, 2024 - APS
Quantum many-body systems, particularly, the ones with large near-EF density states, are
well known for exhibiting rich phase diagrams as a result of enhanced electron correlations …

Microscopic mechanism of room-temperature superconductivity in compressed

L Liu, C Wang, S Yi, KW Kim, J Kim, JH Cho - Physical Review B, 2019 - APS
Room-temperature superconductivity has been one of the most challenging subjects in
modern physics. Recent experiments reported that lanthanum hydride LaH 10±x (x< 1) …

Nodal s± pairing symmetry in an iron-based superconductor with only hole pockets

D Wu, J Jia, J Yang, W Hong, Y Shu, T Miao, H Yan… - Nature Physics, 2024 - nature.com
The origin of high-temperature superconductivity in iron-based superconductors is still not
understood; determination of the pairing symmetry is essential for understanding the …

Evidence of nematic order and nodal superconducting gap along [110] direction in RbFe2As2

X Liu, R Tao, M Ren, W Chen, Q Yao, T Wolf… - Nature …, 2019 - nature.com
Unconventional superconductivity often intertwines with various forms of order, such as the
nematic order which breaks the rotational symmetry of the lattice. Here we report a scanning …

Superconductivity and Wilson transition behaviors of lithium-rich oxides under pressure based on ab initio calculations

L Song, X **, J Li, Y Liu, L An, Y Chen, Q **, T Cui… - Physical Review B, 2023 - APS
The study of abnormal Wilson transitions from metal to nonmetal states in simple electronic
systems under high pressure plays an important role in understanding the profound physical …

Emergent spin-glass state in the doped Hund's metal

SJ Li, D Zhao, S Wang, ST Cui, NZ Wang, J Li… - Physical Review B, 2023 - APS
Hund's metal is one kind of correlated metal, in which the electronic correlation is strongly
influenced by the Hund's interaction. At high temperatures, while the charge and orbital …

Anomalous phonon behavior in superconducting : An optical study

R Yang, Y Dai, B Xu, W Zhang, Z Qiu, Q Sui… - Physical Review B, 2017 - APS
The temperature dependence of ab-plane optical conductivity of CaKFe 4 As 4 has been
measured below and above its superconducting transition temperature T c≃ 35.5 K. In the …

Strong-coupling superconductivity in the kagome metal revealed by soft point-contact spectroscopy

M He, H Zi, H Zhan, Y Zhao, C Ren, X Hou, L Shan… - Physical Review B, 2022 - APS
The nature of the superconducting state in kagome metals AV 3 Sb 5 is a key issue in need
of experimental clarification. Here, we report on a study of the superconducting order …

Observation of Zero-Energy Modes with Possible Time-Reversal Symmetry Breaking on Step Edge of CaKFe4As4

L Cao, G Li, W Liu, YB Liu, H Chen, Y **ng… - Chinese Physics …, 2024 - iopscience.iop.org
Topologically nontrivial Fe-based superconductors attract extensive attentions due to their
ability of hosting Majorana zero modes (MZMs) which could be used for topological quantum …

Ultrafast coherent phonon dynamics in the kagome magnet

J Fu, Y Han, Y Wang, H Wu, Y Yang, R Du, J Zhao… - Physical Review B, 2025 - APS
The kagome intermetallic compound RV 6 S n 6 (R= rare earth) not only supports unique
lattice geometries and nontrivial topological band structures but also exhibits long-range …