Low-energy electrodynamics of superconducting diamond

M. Ortolani, S. Lupi, L. Baldassarre, U. Schade, P. Calvani, Y. Takano, M. Nagao, T. Takenouchi, H. Kawarada

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Abstract

Heavily boron-doped, diamond films can become superconducting with critical temperatures Tc well above 4 K. Here we first measure the reflectivity of such a film down to 5cm-1, by also using coherent synchrotron radiation. We thus determine the optical gap 2Δ, the field penetration depth λ, the range of action of the Ferrell-Glover-Tinkham sum rule, and the electron-phonon spectral function α2F(ω). We conclude that diamond behaves as a dirty BCS superconductor.

Original languageEnglish
Article number097002
JournalPhysical Review Letters
Volume97
Issue number9
DOIs
Publication statusPublished - 2006 Sep 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Ortolani, M., Lupi, S., Baldassarre, L., Schade, U., Calvani, P., Takano, Y., Nagao, M., Takenouchi, T., & Kawarada, H. (2006). Low-energy electrodynamics of superconducting diamond. Physical Review Letters, 97(9), [097002]. https://doi.org/10.1103/PhysRevLett.97.097002