Topological superconductivity in Ni-based transition metal trichalcogenides
Yinxiang Li, Xianxin Wu, Yuhao Gu, Congcong Le, Shengshan Qin, Ronny Thomale, Jiangping Hu
DOI 10.1103/PhysRevB.100.214513 · Physical Review B
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Abstract
Based on a two-orbital honeycomb lattice model and by use of a random phase approximation analysis we investigate the pairing symmetry of Ni-based transition metal trichalcogenides. We find that an I-wave (A2g) state and a chiral d-wave (Eg) state are dominant and nearly degenerate for typical electron and hole dopings. Both pairing states exhibit nontrivial topological properties, which manifest themselves by the chiral edge states for the d+id-wave state and dispersionless Andreev bound state at zero energy for the I-wave state. We thus show that Ni-based transition metal trichalcogenides provide a promising platform to study exotic topological phenomena emerging from electronic correlation effects.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FePSe3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.5 | Pressure not reported | unknown |
| NiPS3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NiPSe3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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