6 papers
Spectroscopic fingerprints of a ferroaxial charge density wave
Jiangchang Zheng, Zhongyi Zhang, Fazhi Yang +11
Unconventional charge density waves (CDWs) with complex order parameters can host exotic collective modes and non-trivial topologies. They have emerged as a new frontier in the stu…
Evolution of the intertwining correlated topological phases in iron-based superconductor Fe(Te,Se)
Yue Sun, Shiying He, Zhongyi Zhang +16
Multiple topological electronic phases can coexist within a single quantum material and induce different topological superconducting states, offering deeper insights into interplay…
Mirror-Selective Quasiparticle Interference in Bilayer Nickelate Superconductor
Zhongyi Zhang, Jun Zhan, Congcong Le +3
The recent discovery of high-temperature superconductivity in both bulk and thin-film bilayer nickelates has garnered significant attention. In this study, inspired by recent STM e…
Fermi-surface diagnosis for topological superconductivity with -wave-like pairing symmetries
Zhongyi Zhang, Ken Shiozaki, Chen Fang +1
Theoretical prediction of topological superconductivity is key to their discovery. Recently, it is proved that in 199 out of 230 space groups, topological superconductivity coexist…
Superconducting Order Parameters in Spin Space Groups: Methodology and Application
Xilin Feng, Zhongyi Zhang
We employ a systematic approach to construct superconducting order parameters based on the spin space group. Compared to magnetic space groups where spatial and spin rotation of el…
Double Majorana Vortex Flat Bands in the Topological Dirac Superconductor
Zhongyi Zhang, Zixi Fang, Shengshan Qin +3
Vortex lines, known as topological defects, are cable of trapping Majorana modes in superconducting topological materials. Previous studies have primarily focused on topological ba…