Protective layer enhanced the stability and superconductivity of tailored antimonene bilayer
Jun-Jie Zhang, Yang Zhang, Shuai Dong
DOI 10.1103/PhysRevMaterials.2.126004 · Physical Review Materials
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Abstract
For two-dimensional superconductors, the high stability in ambient conditions is critical for experiments and applications. Few-layer antimonene can be nondegradative over a couple of months, which is superior to the akin black phosphorus. Based on the anisotropic Migdal-Eliashberg theory and maximally-localized Wannier functions, this work predicts that electron-doping and Ca-intercalation can transform β-Sb bilayer from a semimetal to a superconductor. However, the stability of antimonene bilayer in air trends to be decreased due to the electron doping. To overcome this drawback, two kinds of protective layers (graphene and h-BN) are proposed to enhance the stability. Interestingly, the superconducting transition temperature will also be enhanced to 9.6K, making it a promising candidate as nanoscale superconductor.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.6 | Pressure not reported | unknown |
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