Low-energy electrodynamics of superconducting diamond

Abstract

Heavily-boron-doped diamond films become superconducting with critical temperatures $T_c$ well above 4 K. Here we first measure the reflectivity of such a film down to 5 cm${}^{-1}$, by also using Coherent Synchrotron Radiation. We thus determine the optical gap, the field penetration depth, the range of action of the Ferrell-Glover-Tinkham sum rule, and the electron-phonon spectral function. We conclude that diamond behaves as a dirty BCS superconductor.

4 pages including 3 figures

References in corpus (5)

• Superconductivity in CVD Diamond Thin Film Well-Above Liquid Helium Temperature
• Three-dimensional MgB${}_2$-type superconductivity in hole-doped diamond
• Origin of Superconductivity in Boron-doped Diamond
• Electron-Phonon Coupling in Boron-Doped Diamond Superconductor
• Boron Spectral Density and Disorder Broadening in B-doped Diamond

Cited by in corpus (5)

• Probing superconducting energy gap from infrared spectroscopy on a Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ single crystal with T${}_c$=37 K
• Superconducting properties of Fe-based layered superconductor LaO${}_{0.9}$F${}_{0.1-\delta }$FeAs
• Observation of charge-density-wave excitations in manganites
• Observation of superconducting gap in boron-doped diamond by laser-excited photoemission spectroscopy
• Sub-THz electrodynamics of the graphene-like superconductor CaAlSi