Electric-field-driven hole carriers and superconductivity in diamond
K. Nakamura, S. H. Rhim, A. Sugiyama, K. Sano, T. Akiyama, T. Ito, M. Weinert, A. J. Freeman
DOI 10.1103/PhysRevB.87.214506 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
First-principles calculations of electric-field-driven superconductivity at the hydrogenated diamond (110) surface are presented. While the hydrogens on the surface effectively maintain the intrinsic sp3 covalent nature of diamond, the hole carriers induced by an external negative electric field (E-field) lead to a metallic surface region. Importantly, the concentration of hole carriers, confined within a few carbon layers of thickness ∼5–10 Å below the surface, exceeds 1021 cm−3, which is larger than the critical hole density responsible for superconductivity in the boron-doped diamond, while the calculated electron-phonon coupling constants are comparable in magnitude, suggesting the possibility of superconductivity with enhanced critical field.
Similar papers
Role of surface-bound hole states in electric-field-driven superconductivity at the (110)-surface of diamond
similarity 0.93Kazuhiro Sano et al.
Source status unknown — claims are unverified
Superconductivity and metallic behavior in heavily doped bulk single crystal diamond and graphene/diamond heterostructure
similarity 0.90Shisheng Lin et al. · 2024 · arXiv:2403.00359
Source status unknown — claims are unverified
Above 136 K superconductivity in hole-doped diamond and c-BN under ambient pressure
similarity 0.90Chen Chen et al.
Source status unknown — claims are unverified
Electric field exfoliation and high-T superconductivity in field-effect hole-doped hydrogenated diamond (111)
similarity 0.89Davide Romanin et al. · 2019 · arXiv:1908.01729
Source status unknown — claims are unverified
Microscopic evidence for evolution of superconductivity by effective carrier doping in boron-doped diamond: B11−NMR study
similarity 0.88H. Mukuda et al.
Source status unknown — claims are unverified
Superconductivity in Compression-Shear Deformed Diamond
similarity 0.88Chang Liu et al.
Source status unknown — claims are unverified