An infrared study of the superconducting diamond | Zendy

Lupi S. | Zendy; Baldassarre L. | Zendy; Ortolani M. | Zendy; Calvani P. | Zendy; Schade U. | Zendy; Takano Y. | Zendy

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An infrared study of the superconducting diamond

Author(s) -

Lupi S.,

Baldassarre L.,

Ortolani M.,

Calvani P.,

Schade U.,

Takano Y.

Publication year - 2007

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.200776336

Subject(s) - superconductivity , synchrotron radiation , diamond , condensed matter physics , infrared , phonon , synchrotron , reflectivity , materials science , physics , optics , metallurgy

When heavily doped with boron, diamond films can become superconducting with critical temperatures T c well above 4 K. Here, we measure the reflectivity of such a film down to 5 cm –1 , by using both conventional radiation sources and Coherent Synchrotron Radiation. We thus determine the electron‐phonon Eliashberg spectral function α 2 F ( ω ) and the optical superconducting gap 2 Δ . We conclude that superconducting diamond behaves as a “dirty” BCS superconductor. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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