218 citations · 788 across the 17 of their papers we have counts for
17 papers
Probing hidden Mott gap and incommensurate charge modulation on the polar surfaces of PdCrO
Chenhaoping Wen, Tian Qin, Xuefeng Zhang +6
Here we report a combined study of low-temperature scanning tunneling microscopy (STM) and dynamical mean-field theory (DMFT) on PdCrO, a delafossite metal with an antiferromag…
Real-space Observation of Unidirectional Charge Density Wave and Complex Structural Modulation in the Pnictide Superconductor BaSrNiAs
Tian Qin, Ruixia Zhong, Weizheng Cao +4
Here we use low-temperature and variable-temperature scanning tunneling microscopy to study the pnictide superconductor, BaSrNiAs. In the low-temperature phase…
Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor
Shiwei Shen, Tian Qin, Jingjing Gao +8
Realization of Kondo lattice in superconducting van der Waals materials not only provides a unique opportunity for tuning the Kondo lattice behavior by electrical gating or interca…
Fully two-dimensional incommensurate charge modulation on the Pd-terminated polar surface of PdCoO2
Pengfei Kong, Guowei Li, Zhongzheng Yang +4
Here we use low-temperature scanning tunneling microscopy and spectroscopy to study the polar surfaces of PdCoO2. On the CoO2-terminated polar surface, we detect the quasiparticle…
Inducing and tuning Kondo screening in a narrow-electronic-band system
Shiwei Shen, Chenhaoping Wen, Pengfei Kong +7
Although the single-impurity Kondo physics has already been well understood, the understanding of the Kondo lattice problem where a dense array of local moments couples to the cond…
Charge density wave orders and enhanced superconductivity under pressure in the kagome metal CsV3Sb5
Qi Wang, Pengfei Kong, Wujun Shi +12
Superconductivity in topological kagome metals has recently received great research interests. Here, charge density wave (CDW) orders and the evolution of superconductivity under v…
Anomalous Hall effect in ferrimagnetic metal RMn6Sn6 (R = Tb, Dy, Ho) with clean Mn kagome lattice
Lingling Gao, Shiwei Shen, Qi Wang +11
Kagome lattice, made of corner-sharing triangles, provides an excellent platform for hosting exotic topological quantum states. Here we systematically studied the magnetic and tran…
Roles of the Narrow Electronic Band near the Fermi Level in 1T-TaS-Related Layered Materials
Chenhaoping Wen, Jingjing Gao, Yuan Xie +9
Here we use low-temperature scanning tunneling microscopy and spectroscopy (STM/STS) to reveal the roles of the narrow electronic band in two 1T-TaS-related materials (bulk 1T-…
Impurity-pinned incommensurate charge density wave and local phonon excitations in 2H-NbS2
Chenhaoping Wen, Yuan Xie, Yueshen Wu +6
Here we report a scanning tunneling microscopy (STM) and spectroscopy (STS) study in the superconducting state of 2H-NbS2. We directly visualize the existence of incommensurate cha…
Orbital-selective Dirac fermions and extremely flat bands in frustrated kagome-lattice metal CoSn
Zhonghao Liu, Man Li, Qi Wang +12
Layered kagome-lattice 3d transition metals are emerging as an exciting platform to explore the frustrated lattice geometry and quantum topology. However, the typical kagome electr…
Optical Stark Effect of a Single Defect on TiO2(110) Surface
Lihuan Sun, Anning Dong, Jianmei Li +6
Probing optical Stark effect at the single-molecule or atomic scale is crucial for understanding many photo-induced chemical and physical processes on surfaces. Here we report a st…
Searching for topological Fermi arcs via quasiparticle interference on a type-II Weyl semimetal MoTe
Davide Iaia, Guoqing Chang, Tay-Rong Chang +5
Weyl semimetals display a novel topological phase of matter where the Weyl nodes emerge in pairs of opposite chirality and can be seen as either a source or a sink of Berry curvatu…
Dynamical Negative Differential Resistance in Antiferromagnetically Coupled Few-Atom Spin-Chains
Steffen Rolf-Pissarczyk, Shichao Yan, Luigi Malavolti +3
We present the appearance of negative differential resistance (NDR) in spin-dependent electron transport through a few-atom spin-chain. A chain of three antiferromagnetically coupl…
Closing the superconducting gap in small Pb-nanoislands with high magnetic fields
Steffen Rolf-Pissarczyk, Jacob A. J. Burgess, Shichao Yan +1
Superconducting properties change in confined geometries. Here we study the effects of strong confinement in nanosized Pb-islands on Si(111) 7x7. Small hexagonal islands with diame…
Influence of domain walls in the incommensurate charge density wave state of Cu intercalated 1-TiSe
Shichao Yan, Davide Iaia, Emilia Morosan +3
We report a low-temperature scanning tunneling microscopy study of the charge density wave (CDW) order in 1-TiSe and CuTiSe. In pristine 1-TiSe we observ…
Non-locally sensing the magnetic states of nanoscale antiferromagnets with an atomic spin sensor
Shichao Yan, Luigi Malavolti, Jacob A. J. Burgess +3
The ability to sense the magnetic state of individual magnetic nano-objects is a key capability for powerful applications ranging from readout of ultra-dense magnetic memory to the…
Entanglement-induced Kondo screening in atomic spin chains
Deung-Jang Choi, Roberto Robles, Shichao Yan +6
Quantum entanglement permeates the complex ground states of correlated electron materials defying single-particle descriptions. Coupled magnetic atoms have potential as model syste…