6 papers
ac strain based thermodynamic criterion for vortex lattice in type-II superconductors
Peipei Lu, Mengju Yuan, Jing Zhang +17
In type-I superconductors, zero electrical resistivity and perfect diamagnetism define two fundamental criteria for superconducting behavior. In contrast, type-II superconductors e…
Decoupled interband pairing in a bilayer iron-based superconductor evidenced by ultrahigh-resolution ARPES
Shichong Wang, Yuanyuan Yang, Yang Li +11
We present direct experimental evidence of a weakly coupled multiband superconducting state in the bilayer iron-based superconductor ACaFeAsF (A = K, Cs) via ultrah…
Two Plaquette-Singlet Phases and Emergent SO(5) Deconfined Quantum Criticality in SrCu2(BO3)2
Yi Cui, Kefan Du, Zhanlong Wu +15
The deconfined quantum critical point (DQCP) has become a central open concept in the physics of quantum matter, and its proposed presence in the Shastry-Sutherland model was follo…
Neutron Spin Resonance Near a Lifshitz Transition in Overdoped BaKFeAs
Yang Li, Dingsong Wu, Yingjie Shu +11
Elucidating the relationship between spin excitations and fermiology is essential for clarifying the pairing mechanism in iron-based superconductors (FeSCs). Here, we report inelas…
Preformed Cooper Pairs in a Triclinic Iron Pnictide Superconductor
Zezhong Li, Wenshan Hong, Honglin Zhou +10
Electron pairing along with phase coherence generates superconductivity below the critical temperature (). In underdoped high- cuprates, these two quantum phenomena may o…
Necklace-like pattern of vortex bound states
Zhiyong Hou, Kailun Chen, Wenshan Hong +8
Vortex is a topological defect in the superconducting condensate when a magnetic field is applied to a type-II superconductor, as elucidated by the Ginzburg-Landau theory. Due to t…