187 citations · 708 across the 16 of their papers we have counts for
16 papers
Reversible tuning of magnetic order and intrinsic superconductivity in strained FeTe films via stoichiometry control
Hao Xu, Jing Jiang, Xuesong Gai +11
FeTe is a prototypical parent compound of iron-based superconductors. While bulk FeTe is non-superconducting with a long-range bicollinear antiferromagnetic order, superconductivit…
Critical Role of Disorder for Superconductivity in the Series of Epitaxial Ti(O,N) Films
Fengmiao Li, Oliver Dicks, Myung-Geun Han +14
Realizing experimental control of superconductivity is of paramount importance to advancing both basic research and technological applications. Disorder, generally existing in most…
Realistic simulation of reflection high-energy electron diffraction patterns for two-dimensional lattices using Ewald construction
Chong Liu, Kai Chang, Ke Zou
Reflection high-energy electron diffraction (RHEED) is a powerful tool for characterizing crystal surface structures. However, the setup geometry leads to distorted and complicated…
The observation of in-plane quantum Griffiths singularity in two-dimensional crystalline superconductors
Yi Liu, Shichao Qi, Jingchao Fang +11
Quantum Griffiths singularity (QGS) reveals the profound influence of quenched disorder on the quantum phase transitions, characterized by the divergence of the dynamical critical…
Controlling the electrical and magnetic ground states by doping in the complete phase diagram of titanate Eu1-xLaxTiO3 thin films
Hyungki Shin, Chong Liu, Fengmiao Li +3
EuTiO3, a band insulator, and LaTiO3, a Mott insulator, are both antiferromagnetic with transition temperatures ~ 5.5 K and ~ 160 K, respectively. Here, we report the synthesis of…
Tuning stoichiometry and its impact on superconductivity of monolayer and multilayer FeSe on SrTiO3
Chong Liu, Ke Zou
Synthesis of monolayer FeSe on SrTiO3, with greatly enhanced superconductivity compared to bulk FeSe, remains difficult. Lengthy annealing within a certain temperature window is al…
Epitaxial Growth of Perovskite SrBiO Film on SrTiO by Oxide Molecular Beam Epitaxy
Fengmiao Li, Bruce A. Davidson, Ronny Sutarto +7
Hole-doped perovskite bismuthates such as BaKBiO and SrKBiO are well-known bismuth-based oxide high-transition-temperature superconductors. Reported…
Type-II Ising superconductivity and anomalous metallic state in macro-size ambient-stable ultrathin crystalline films
Yi Liu, Yong Xu, Jian Sun +13
Recent emergence of two-dimensional (2D) crystalline superconductors has provided a promising platform to investigate novel quantum physics and potential applications. To reveal es…
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…
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…
Origin of charge transfer and enhanced electron-phonon coupling in single unit-cell FeSe films on SrTiO3
Huimin Zhang, Ding Zhang, Xiaowei Lu +7
Interface charge transfer and electron-phonon coupling have been suggested to play a crucial role in the recently discovered high-temperature superconductivity of single unit-cell…
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…
Atomically Resolved FeSe/SrTiO3(001) Interface Structure by Scanning Transmission Electron Microscopy
Fangsen Li, Qinghua Zhang, Chenjia Tang +14
Interface-enhanced high-temperature superconductivity in one unit-cell (UC) FeSe films on SrTiO3(001) (STO) substrate has recently attracted much attention in condensed matter phys…
Interface induced high temperature superconductivity in single unit-cell FeSe films on SrTiO3(110)
Guanyu Zhou, Ding Zhang, Chong Liu +9
We report high temperature superconductivity in one unit-cell (1-UC) FeSe films grown on STO(110) substrate by molecular beam epitaxy. By in-situ scanning tunneling spectroscopy me…
Superconductivity dichotomy in K-coated single and double unit cell FeSe films on SrTiO3
Chenjia Tang, Ding Zhang, Yunyi Zang +12
We report the superconductivity evolution of one unit cell (1-UC) and 2-UC FeSe films on SrTiO3(001) substrates with potassium (K) adsorption. By in situ scanning tunneling spectro…
Interface enhanced electron-phonon coupling and high temperature superconductivity in potassium-coated ultra-thin FeSe films on SrTiO3
Chenjia Tang, Chong Liu, Guanyu Zhou +10
Alkali-metal (potassium) adsorption on FeSe thin films with thickness from two unit cells (UC) to 4-UC on SrTiO3 grown by molecular beam epitaxy is investigated with a low-temperat…