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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…
Electronic structure of the ingredient planes of cuprate superconductor Bi2Sr2CuO6+δ: a comparison study with Bi2Sr2CaCu2O8+δ
Yan-Feng Lv, Wen-Lin Wang, Hao Ding +13
By means of low-temperature scanning tunneling microscopy, we report on the electronic structures of BiO and SrO planes of Bi2Sr2CuO6+δ (Bi-2201) superconductor prepared by argon-i…
Observation of Double-Dome Superconductivity in Potassium-Doped FeSe Thin Films
Can-Li Song, Hui-Min Zhang, Yong Zhong +6
We report on the emergence of two disconnected superconducting domes in alkali-metal potassium (K)-doped FeSe ultra-thin films grown on graphitized SiC(0001). The superconductivity…
Band engineering of Dirac surface states in topological insulators-based van der Waals heterostructures
Cui-Zu Chang, Peizhe Tang, Xiao Feng +5
The existence of gapless Dirac surface band of a three dimensional (3D) topological insulator (TI) is guaranteed by the non-trivial topological character of the bulk band, yet the…
Mapping the Electronic Structure of Each Ingredient Oxide Layer of High- Cuprate Superconductor Bi2Sr2CaCu2O8+δ
Yan-Feng Lv, Wen-Lin Wang, Jun-Ping Peng +11
Understanding the mechanism of high transition temperature (Tc) superconductivity in cuprates has been hindered by the apparent complexity of their multilayered crystal structure.…
Probing Dirac Fermion Dynamics in Topological Insulator BiSe Films with Scanning Tunneling Microscope
Can-Li Song, Lili Wang, Ke He +4
Scanning tunneling microscopy and spectroscopy have been used to investigate the femtosecond dynamics of Dirac fermions in the topological insulator BiSe ultrathin films. A…