Publications (21)
Evidence chain for time-reversal symmetry-breaking kagome superconductivity
Hanbin Deng, Guowei Liu, Z. Guguchia +25
Superconductivity and magnetism are antagonistic quantum matter, while their intertwining has long been considered in frustrated-lattice systems1-3. In this work, we utilize scanni…
Role of anion in the pairing interaction of iron-based superconductivity
J. -X. Yin, Y. Y. Zhao, Zheng Wu +20
High-temperature iron-based superconductivity develops in a structure with unusual lattice-orbital geometry, based on a planar layer of Fe atoms with 3d orbitals and tetrahedrally…
Chiral kagome superconductivity modulations with residual Fermi arcs in KV3Sb5 and CsV3Sb5
Hanbin Deng, Hailang Qin, Guowei Liu +26
Superconductivity involving finite momentum pairing can lead to spatial gap and pair density modulations, as well as Bogoliubov Fermi states within the superconducting gap. However…
Perspective: imaging atomic step geometry to determine surface terminations of kagome materials and beyond
Guowei Liu, Tianyu Yang, Yu-Xiao Jiang +4
Here we review scanning tunneling microscopy research on the surface determination for various types of kagome materials, including 11-type (CoSn, FeSn, FeGe), 32-type (Fe3Sn2), 13…
Charge density wave with suppressed long-range structural modulation in canted antiferromagnetic kagome FeGe
Chenfei Shi, Wenchang Hou, Hanbin Deng +30
Kagome lattice can host abundant exotic quantum states such as superconductivity and charge density wave (CDW). Recently, successive orders of A-type antiferromagnetism (AFM), CDW…
Giant and Reversible Electronic Structure Evolution in a Magnetic Topological Material EuCd2As2
Yang Wang, Cong Li, Taimin Miao +25
The electronic structure and the physical properties of quantum materials can be significantly altered by charge carrier doping and magnetic state transition. Here we report a disc…
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…
Imaging real-space flat band localization in kagome magnet FeSn
Daniel Multer, Jia-Xin Yin, Md. Shafayat Hossain +12
Kagome lattices host flat bands due to their frustrated lattice geometry, which leads to destructive quantum interference of electron wave functions. Here, we report imaging of the…
Magnetic-coupled electronic landscape in bilayer-distorted titanium-based kagome metals
Yong Hu, Congcong Le, Long Chen +10
Quantum materials whose atoms are arranged on a lattice of corner-sharing triangles, , the kagome lattice, have recently emerged as a captivating platform for invest…
Spectroscopic signature of obstructed surface states in SrInP
Xiang-Rui Liu, Hanbin Deng, Yuntian Liu +13
The century-long development of surface sciences has witnessed the discoveries of a variety of quantum states. In the recently proposed "obstructed atomic insulators", insulators w…
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…
Thermal dynamics of charge density wave pinning in ZrTe3
Limin Liu, Changjiang Zhu, Z. Y. Liu +15
Impurity pinning has long been discussed to have a profound effect on the dynamics of an incommensurate charge density wave (CDW), which would otherwise slide through the lattice w…
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…
Disorder Driven Non-Anderson Transition in a Weyl Semimetal
Cong Li, Yang Wang, Jianfeng Zhang +11
For several decades, it was widely believed that a non-interacting disordered electronic system could only undergo an Anderson metal-insulator transition due to Anderson localizati…
Local excitation of kagome spin ice magnetism in HoAgGe seen by scanning tunneling microscopy
Hanbin Deng, Tianyu Yang, Guowei Liu +20
The kagome spin ice can host frustrated magnetic excitations by flipping its local spin. Under an inelastic tunneling condition, the tip in a scanning tunneling microscope can flip…
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…
Unusual Dual Flat Bands and two-dimensional Dirac-node Arc State in Kagome Metal Ni3In2S2
Bo Liang, Yichen Liu, Jie Pang +36
Kagome materials are at the frontier of condensed matter physics. An ideal kagome lattice features only one geometrically frustrated flat band spanning the entire momentum space an…
Chiral pair density waves with residual Fermi arcs in RbV3Sb5
Xiao-Yu Yan, Hanbin Deng, Tianyu Yang +8
The chiral 2 by 2 charge order has been reported and confirmed in the kagome superconductor RbV3Sb5, while its interplay with superconductivity remains elusive owing to its lowest…
Many-body electronic structure in pyrochlore superconductor CsBi2 and spin liquid Pr2Ir2O7
Wei Song, Guowei Liu, Hanbin Deng +26
The pyrochlore lattice materials can exhibit geometrical frustration, while the related many-body electronic states remain elusive. In this work, we performed scanning tunneling mi…
Atomic perspective on the topological magnetism in kagome metal Co3Sn2S2
Guowei Liu, Wei Song, Titus Neupert +3
Topological quantum materials with kagome lattices have attracted intense interest due to their unconventional electronic structures, which exhibit nontrivial topology, anomalous m…
Non-Hermitian Boundary in a Surface Selective Reconstructed Magnetic Weyl Semimetal
Cong Li, Yang Wang, Jianfeng Zhang +11
Non-Hermitian physics, studying systems described by non-Hermitian Hamiltonians, reveals unique phenomena not present in Hermitian systems. Unlike Hermitian systems, non-Hermitian…