Low-energy electrodynamics of superconducting diamond

被引：50

作者：

Ortolani, M.

Lupi, S.

Baldassarre, L.

Schade, U.

Calvani, P.

Takano, Y.

Nagao, M.

Takenouchi, T.

Kawarada, H.

机构：

[1] Univ Roma La Sapienza, CNR, INFM, I-00185 Rome, Italy

[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[3] Berliner Elektronenspeicherring Gesell Synchrotro, D-12489 Berlin, Germany

[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[5] Waseda Univ, Sch Sci & Engn, Tokyo 1698555, Japan

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.97.097002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Heavily boron-doped, diamond films can 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 2 Delta, the field penetration depth lambda, the range of action of the Ferrell-Glover-Tinkham sum rule, and the electron-phonon spectral function alpha F-2(omega). We conclude that diamond behaves as a dirty BCS superconductor.

引用

页数：4

共 24 条

[1] Brilliant, coherent far-infrared (THz) synchrotron radiation -: art. no. 094801 [J].