Low-Energy Electrodynamics of Superconducting Diamond
| Autor: | Masanori Nagao, Stefano Lupi, Ulrich Schade, Leonetta Baldassarre, Hiroshi Kawarada, Paolo Calvani, T. Takenouchi, Yoshihiko Takano, Michele Ortolani |
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| Rok vydání: | 2006 |
| Předmět: |
Superconductivity
Physics Range (particle radiation) Condensed matter physics Condensed Matter - Superconductivity FOS: Physical sciences General Physics and Astronomy Synchrotron radiation Diamond engineering.material Lambda Omega novel superconductors Superconductivity (cond-mat.supr-con) Condensed Matter::Materials Science THIN-FILMS Low energy Condensed Matter::Superconductivity engineering Sum rule in quantum mechanics TEMPERATURE |
| Zdroj: | Physical review letters 97 (2006). info:cnr-pdr/source/autori:Ortolani, M; Lupi, S; Baldassarre, L; Schade, U; Calvani, P; Takano, Y; Nagao, M; Takenouchi, T; Kawarada, H/titolo:Low-energy electrodynamics of superconducting diamond/doi:/rivista:Physical review letters (Print)/anno:2006/pagina_da:/pagina_a:/intervallo_pagine:/volume:97 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.97.097002 |
| Popis: | 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. Comment: 4 pages including 3 figures |
| Databáze: | OpenAIRE |
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