14 papers
One-Step Epitaxial Access to Rhombohedral Graphene Flat-Band States on Step-Bunched SiC
Hao Zhong, Xingzhe Wang, Hanbin Deng +15
Rhombohedral graphene multilayers provide a moiré-free platform for correlated and topological flat-band physics, but direct, transfer-free epitaxial access to thickness-tunable m…
Discovery of a symmetry-driven electronic cascade in a -wave altermagnet
Zhouyi Yin, Zheng Shi, Shuxuan Zhang +9
The paper reports the discovery of a symmetry-driven cascade of finite‑momentum charge‑density‑wave orders, including a primary density wave, a nematic component, and an off‑axis m…
Probing Quantum Geometric Phases via Scanning Tunneling Microscopy
Chao Yan, Mu-Wei Gao, Yue Zhao +1
The quantum geometric phase intrinsically dictates the geometry, topology, and many-body correlations of electronic wave functions. While quantum geometric phases are conventionall…
Phase-sensitive evidence for pair density waves in a kagome superconductor
Xiao-Yu Yan, Guowei Liu, Hanbin Deng +22
Pair density wave (PDW) exhibits periodic amplitude and sign modulations of the superconducting order parameter. Such a pairing state has long been proposed to be highly sensitive…
Josephson spectroscopy study of kagome superconductors toward the deep point-contact regime
Hailang Qin, Xiao-Yu Yan, Hanbin Deng +4
Josephson scanning tunneling microscopy (JSTM) has emerged as an important technique for probing the superconducting order parameter at the atomic scale. However, the Josephson cur…
Switchable chiral 2x2 pair density wave in pure CsV3Sb5
Wei Song, Xiao-Yu Yan, Xin Yu +9
We investigate electron pairing in a super clean kagome superconductor CsV3Sb5 with a residual resistivity ratio (RRR) of 290. By using the dilution-refrigerator-based scanning tun…