Superconductivity in Ca-intercalated bilayer silicene
Source abstract
Abstract
Within first-principles calculations, we explore superconductivity in Ca-intercalated bilayer silicene compound, ${\mathrm{Si}}2{\mathrm{CaSi}}2$. This arises from the coupling of interlayer flowerlike $\mathrm{\ensuremath{\Gamma}}$-centered Fermi surface formed by the hybridization of Ca-3$d$ and Si-3${p}z$ 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 12.5 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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Graphene research and applications · Carbon Nanotubes in Composites · Fullerene Chemistry and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Indian Institute of Science Education and Research (IISER) Tirupati
Vellore Institute of Technology
Kwansei Gakuin University
Funding
Ministry of Education, India · Science for Equity, Empowerment and Development Division · VIT University · Japan Society for the Promotion of Science · Japan Science and Technology Corporation · Indian Institute of Science Education and Research Tirupati · Department of Science and Technology, Ministry of Science and Technology, India · Ministry of Electronics and Information technology
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