Far-infrared optical conductivity of NbN1-xCx thin films

被引：2

作者：

Shibata, H

Kimura, S

Kashiwaya, S

Kohjiro, S

Sawa, A

Mitsugi, K

Tanaka, Y

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[2] Nagoya Univ, Chikusa Ku, Nagoya, Aichi 4648601, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 367卷 / 1-4期

关键词：

optical conductivity; NbN1-xCx; superconducting energy gap; London penetration depth;

D O I：

10.1016/S0921-4534(01)01028-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical conductivity spectra sigma(omega) = sigma(1)(omega) + isigma(2)(omega) of NbN1-xCx thin films have been measured in the-far-infrared region at temperatures above and below T-c, and have been analyzed based on the Mattis-Bardeen theory. The results suggest that NbN1-xCx is a typical dirty-limit BCS-type superconductor in the strong-coupling regime. The value of the superconducting energy gap and the London penetration depth were estimated from optical results, which agree well with values reported previously and obtained from the electrical measurements. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：337 / 342

页数：6

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