Superconductivity in Ca-intercalated bilayer silicene
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866914703320547328 |
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| author | Sam, Jisvin Mohakud, Sasmita Wakabayashi, Katsunori Dutta, Sudipta |
| author_facet | Sam, Jisvin Mohakud, Sasmita Wakabayashi, Katsunori Dutta, Sudipta |
| contents | Within first-principles calculations, we explore superconductivity in Ca-intercalated bilayer silicene compound, Si2CaSi2. This arises from the coupling of interlayer flower-like Γ-centered Fermi surface formed by the hybridization of Ca-3d and Si-3pz orbitals with low-energy out-of-plane vibrations enabled by silicene's buckling. The consequent large electron-phonon coupling, as evident from the Eliashberg spectral function leads to superconductivity below 5.4 K in this two-dimensional covalent system. Our results reveal the key control parameters to achieve superconductivity in experimentally synthesizable silicon-based thin materials that can find diverse applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_03036 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Superconductivity in Ca-intercalated bilayer silicene Sam, Jisvin Mohakud, Sasmita Wakabayashi, Katsunori Dutta, Sudipta Superconductivity Within first-principles calculations, we explore superconductivity in Ca-intercalated bilayer silicene compound, Si2CaSi2. This arises from the coupling of interlayer flower-like Γ-centered Fermi surface formed by the hybridization of Ca-3d and Si-3pz orbitals with low-energy out-of-plane vibrations enabled by silicene's buckling. The consequent large electron-phonon coupling, as evident from the Eliashberg spectral function leads to superconductivity below 5.4 K in this two-dimensional covalent system. Our results reveal the key control parameters to achieve superconductivity in experimentally synthesizable silicon-based thin materials that can find diverse applications. |
| title | Superconductivity in Ca-intercalated bilayer silicene |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2403.03036 |