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Topological Characters in Fe(TeSe) thin films
Xianxin Wu, Shengshan Qin, Yi Liang +2
We investigate topological properties in the Fe(Te,Se) thin films. We find that the single layer FeTeSe has nontrivial topological invariance which originates fro…
Observation of a van Hove singularity and implication for strong coupling induced Cooper pairing in KFe2As2
Delong Fang, Xun Shi, Zengyi Du +14
Scanning tunneling spectroscopy (STS) and angle-resolved photoemission spectroscopy (ARPES) have been investigated on single crystal samples of KFe2As2. A van Hove singularity (vHs…
Magnetisms in -type monolayer gallium chalcogenides (GaSe, GaS)
Sianxin Wu, Xia Dai, Hongyi Yu +3
Magnetisms in -type monolayer GaX (X=S,Se) is investigated by performing density-functional calculations. Due to the large density of states near the valence band edge, these mo…
Structural and Magnetic Phase Diagram of CrAs and its Relationship with Pressure-induced Superconductivity
Yao Shen, Qisi Wang, Yiqing Hao +11
Most unconventional superconductors, including cuprates and iron-based superconductors, are derived from chemical doping or application of pressure on their collinearly magnetic-or…
CaFeAs: a Staggered Intercalation of Quantum Spin Hall and High Temperature Superconductivity
Xianxin Wu, Shengshan Qin, Yi Liang +3
We predict that CaFeAs, a newly discovered iron-based high temperature (T) superconductor, is a staggered intercalation compound that integrates topological quantum spin ha…
Superconducting Gaps via Raman Scattering in Iron Superconductors
Chandan Setty, Jiangping Hu
We investigate non-resonant Raman response for iron-based superconductors using the framework of an effective S4 model that was recently proposed to capture the essential electroni…