Structure and superconductivity of isotope-enriched boron-doped diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-02-02 |
| Journal | OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) |
| Authors | J. D. Thompson, E A Ekimov, V A Sidorov, A Zoteev, Yu N Lebedā |
| Institutions | Institute of High Pressure Physics, Institute for High Pressure Physics |
Abstract
Section titled āAbstractāSuperconducting boron-doped diamond samples were synthesized with isotopes of {sup 10}B, {sup 11}B, {sup 13}C and {sup 12}C. We claim the presence of a carbon isotope effect on the superconducting transition temperature, which supports the ādiamond-carbonā-related nature of superconductivity and the importance of the electron-phonon interaction as the mechanism of superconductivity in diamond. Isotope substitution permits us to relate almost all bands in the Raman spectra of heavily boron-doped diamond to the vibrations of carbon atoms. The 500 cm{sup 01} Raman band shifts with either carbon or boron isotope substitution and may be associated with vibrations of paired or clustered boron. The absence of a superconducting transition (down to 1.6 K) in diamonds synthesized in the Co-C-B system at 1900 K correlates with the small boron concentration deduced from lattice parameters.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal Sourceā- DOI: None