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Electronic Landscape of Kagome Superconductors VSb ( = K, Rb, Cs) from Angle-Resolved Photoemission Spectroscopy
Yong Hu, Xianxin Wu, Andreas P. Schnyder +1
The recently discovered layered kagome superconductors VSb ( = K, Rb, Cs) have garnered significant attention, as they exhibit an intriguing com…
Effective model and pairing tendency in bilayer Ni-based superconductor LaNiO
Yuhao Gu, Congcong Le, Zhesen Yang +2
Since the discovery of cuprate, the origin of high-T superconductivity has been an outstanding puzzle. Recently, high-T superconductivity was observed in a bilayer nickelat…
Interaction-driven first-order and higher-order topological superconductivity
Pietro M. Bonetti, Debmalya Chakraborty, Xianxin Wu +1
We investigate topological superconductivity in the Rashba-Hubbard model, describing heavy-atom superlattice and van der Waals materials with broken inversion. We focus in particul…
Nodeless electron pairing in CsVSb-derived kagome superconductors
Yigui Zhong, Jinjin Liu, Xianxin Wu +19
The newly discovered kagome superconductors represent a promising platform for investigating the interplay between band topology, electronic order, and lattice geometry. Despite ex…
Hinge Majorana Flat Band in Type-II Dirac Semimetals
Yue Xie, Xianxin Wu, Zhong Fang +1
Type-II Dirac semimetals exhibit a unique Fermi surface topology, which allows them to host novel topological superconductivity (TSC). We reveal a novel inter-orbital superconducti…
Robust topological superconductivity in spin-orbit coupled systems at higher-order van Hove filling
Xinloong Han, Jun Zhan, Fu-chun Zhang +2
Van Hove singularities (VHSs) in proximity to the Fermi level promote electronic interactions and generate diverse competing instabilities. It is also known that a nontrivial Berry…