Superconductivity from doping boron icosahedra

Abstract

We propose a new route to achieve the superconducting state in Boron-rich solids, the hole doping of B${}_{12}$ icosahedra. For this purpose we consider a prototype metallic phase of B${}_{13}$C${}_2$. We show that in this compound the Boron icosahedral units are mainly responsible for the large phonon frequencies logarithmic average, 65.8 meV, and the moderate electron-phonon coupling 0.8. We suggest that this high critical temperature could be a general feature of hole doped boron icosahedral solids.

5 pages, 5 figures, Band structure added

References in corpus (8)

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• High-T${}_c$ Superconductivity in doped boron-carbon clathrates
• High-Temperature Conventional Superconductivity in the Boron-Carbon system: Material Trends
• Configurational order-disorder induced metal-nonmetal transition in B${}_{13}$C${}_2$ studied with first-principles superatom-special quasirandom structure method
• High-throughput screening for boride superconductors
• Thermodynamic stability of Li-B-C compounds from first principles
• Machine-learning Guided Search for Phonon-mediated Superconductivity in Boron and Carbon Compounds
• Boron Content and the Superconducting Critical Temperature of Carbon-Based Materials