Prediction of new topological superconductor candidate 1T−Ti(Se1−yTey)2
Wenjun Liu, Aiyun Luo, Guyue Zhong, Jinyu Zou, Gang Xu
DOI 10.1103/PhysRevResearch.4.023127 · Physical Review Research
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Abstract
Topological superconductivity has attracted intensive interest for its ability to host the Majorana zero mode and its implementation in topological quantum computations. Based on first-principles calculations and the analysis of the effective Bogoliubov–de Gennes Hamiltonian, we demonstrate that 1T−TiTe2 is a topological metal hosting topological surface states near the Fermi level, and it exhibits a normal-topological-normal superconducting phase transition as a function of the chemical potential. These results point to a new promising topological superconductor. Furthermore, our calculations also suggest that the transition metal intercalated Ti(Se1−yTey)2 is also a highly possible route to realize topological superconductivity and Majorana zero modes.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| TiTe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.3 | 5 GPa | unknown |
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