687 citations · 1.8k across the 23 of their papers we have counts for
23 papers
Interfacial superconductivity and a Se-vacancy ordered insulating phase in the FeSe/PbOx heterostructures
Yunkai Guo, Xuanyu Long, Jingming Yan +3
The discovery of high-temperature superconductivity in FeSe/SrTiO3 has sparked significant interests in exploring new superconducting systems with engineered interfaces. Here, usin…
Stripe charge order driven manipulation of Majorana bound states in 2M-WS2 topological superconductor
Xuemin Fan, Xiaoqi Sun, Penghao Zhu +8
Majorana bound states (MBSs) are building blocks for topological quantum computing. They can be generated via the combination of electronic topology and superconductivity. To achie…
Ubiquitous stripe phase and enhanced electron pairing in interfacial high-Tc superconductor FeSe/BaTiO
Xuemin Fan, Wenqiang Cui, Yonghao Yuan +2
Monolayer FeSe grown on SrTiO provides a new playground for high-Tc superconductivity. A recent study shows the importance of stripy instability for superconductivity enhanceme…
Evolution of electronic structure in pristine and hole-doped kagome metal RbVSb
Jiawei Yu, Kebin Xiao, Yonghao Yuan +8
We report on in situ low-temperature (4 K) scanning tunneling microscope measurements of atomic and electronic structures of the cleaved surfaces of an alkali-based kagome metal Rb…
Incommensurate smectic phase in close proximity to the high-Tc superconductor FeSe/SrTiO3
Yonghao Yuan, Xuemin Fan, Xintong Wang +4
Superconductivity is significantly enhanced in monolayer FeSe grown on SrTiO3, but not for multilayer films, in which large strength of nematicity develops. However, the link betwe…
Electronic states and magnetic response of MnBi2Te4 by scanning tunneling microscopy and spectroscopy
Yonghao Yuan, Xintong Wang, Hao Li +10
Exotic quantum phenomena have been demonstrated in recently discovered intrinsic magnetic topological insulator MnBi2Te4. At its two-dimensional limit, quantum anomalous Hall (QAH)…
Coulomb gap induced by electronic correlation and enlarged superconducting gap in laterally confined Pb islands grown on SrTiO3
Yonghao Yuan, Xintong Wang, Canli Song +6
We report high-resolution scanning tunneling microscopy (STM) study of nano-sized Pb islands grown on SrTiO3, where three distinct types of gaps with different energy scales are re…
Edge states at nematic domain walls in FeSe films
Yonghao Yuan, Wei Li*, Bin Liu +9
Quantum spin Hall (QSH) effect is an intriguing phenomenon arising from the helical edge states in two-dimensional topological insulators. We use molecular beam epitaxy (MBE) to pr…
Experimental realization of an intrinsic magnetic topological insulator
Yan Gong, Jingwen Guo, Jiaheng Li +21
Intrinsic magnetic topological insulator (TI) is a stoichiometric magnetic compound possessing both inherent magnetic order and topological electronic states. Such a material can p…
Surface symmetry breaking and disorder effects on superconductivity in perovskite BaBi3 epitaxial films
Wen-Lin Wang, Yi-Min Zhang, Nan-Nan Luo +11
The structural or electronic symmetry breaking of the host lattice is a recurrent phenomenon in many quantum materials, including superconductors. Yet, how these broken symmetry st…
Anisotropic superconductivity and elongated vortices with unusual bound states in quasi-one-dimensional nickel-bismuth compounds
Wen-Lin Wang, Yi-Min Zhang, Yan-Feng Lv +7
We report low temperature scanning tunneling microscopy and spectroscopy studies of Ni-Bi films grown by molecular beam epitaxy. Highly anisotropic and twofold symmetric supercondu…
Atomic Visualization of Copper Oxide Structure in Infinite-Layer Cuprate SrCuO2
Yong Zhong, Sha Han, Yang Wang +8
We report on atomic-scale visualization of the structure of infinite-layer cuprate SrCuO2 thin films grown on Nb-doped SrTiO3 substrates by molecular beam epitaxy. In-situ scanning…
Observation of Interface Superconductivity in a SnSe2-Epitaxial Graphene van der Waals Heterostructure
Yi-Min Zhang, Jia-Qi Fan, Wen-Lin Wang +7
We report on the direct observation of interface superconductivity in single-unit-cell SnSe2 films grown on graphitized SiC(0001) substrate by means of van der Waals epitaxy. Tunne…
Observation of tunneling gap in epitaxial ultrathin films of pyrite-type copper disulfide
Chong Liu, Haohao Yang, Can-Li Song +5
We report scanning tunneling microscopy investigation on epitaxial ultrathin films of pyrite-type copper disulfide. Layer by layer growth of CuS2 films with a preferential orientat…
An extensive impurity-scattering study on the pairing symmetry of monolayer FeSe films on SrTiO3
Chong Liu, Jiahao Mao, Hao Ding +10
Determination of the pairing symmetry in monolayer FeSe films on SrTiO3 is a requisite for understanding the high superconducting transition temperature in this system, which has a…
Realizing an Epitaxial Stanene with an Insulating Bandgap
Yunyi Zang, Tian Jiang, Yan Gong +12
Stanene, a single atomic layer of Sn in a honeycomb lattice, is predicted a candidate wide bandgap two-dimensional (2D) topological insulator and can host intriguing topological st…
Experimental Observation of Topological Superconductivity and Majorana Zero Modes on beta-Bi2Pd Thin Films
Yan-Feng Lv, Wen-Lin Wang, Yi-Min Zhang +7
Using a cryogenic scanning tunneling microscopy, we report the observation of topologically nontrivial superconductivity on a single material of β-Bi2Pd films grown by molecular be…
Charge-Stripe Order in a Parent Compound of Iron-based Superconductors
Wei Li, Wei-Guo Yin, Lili Wang +4
Charge ordering is one of the most intriguing and extensively studied phenomena in correlated electronic materials because of its strong impact on electron transport properties inc…
Detection of a superconducting phase in a two-atom layer of hexagonal Ga film grown on semiconducting GaN(0001)
Huimin Zhang, Yi Sun, Wei Li +21
The recent observation of superconducting state at atomic scale has motivated the pursuit of exotic condensed phases in two-dimensional (2D) systems. Here we report on a supercondu…
Superconductivity in a single layer alkali-doped FeSe: a weakly coupled two-leg ladder system
Wei Li, Hao Ding, Pengfei Zhang +10
We prepare single layer potassium-doped iron selenide (110) film by molecular beam expitaxy. Such a single layer film can be viewed as a two-dimensional system composed of weakly c…
KFe_2Se_2 is the parent compound of K-doped iron selenide superconductors
Wei Li, Hao Ding, Zhi Li +9
We elucidate the existing controversies in the newly discovered K-doped iron selenide (KxFe2-ySe2-z) superconductors. The stoichiometric KFe2Se2 with \surd2\times\surd2 charge orde…
Phase Separation and Magnetic Order in K-doped Iron Selenide Superconductor
Wei Li, Hao Ding, Peng Deng +8
Alkali-doped iron selenide is the latest member of high Tc superconductor family, and its peculiar characters have immediately attracted extensive attention. We prepared high-quali…
Power-Law Decay of Standing Waves on the Surface of Topological Insulators
Jing Wang, Wei Li, Peng Cheng +9
We propose a general theory on the standing waves (quasiparticle interference pattern) caused by the scattering of surface states off step edges in topological insulators, in which…