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An infrared study of the superconducting diamond

✍ Scribed by Lupi, S. ;Baldassarre, L. ;Ortolani, M. ;Calvani, P. ;Schade, U. ;Takano, Y.

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 417 KB
Volume: 204
Category: Article
ISSN: 0031-8965
DOI: 10.1002/pssa.200776336

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✦ Synopsis

Abstract

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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