INFRARED CONDUCTIVITY OF YBCO FROM TRANSMISSION AND REFLECTION SPECTRA OF THIN-FILMS

被引：9

作者：

CUNSOLO, S

DORE, P

LUPI, S

TRIPPETTI, R

VARSAMIS, CP

SHERMAN, A

机构：

[1] UNIV ROMA LA SAPIENZA,DIPARTIMENTO FIS,PIAZZA A MORO 2,I-00185 ROME,ITALY

[2] AF JOFFE PHYSICOTECH INST,ST PETERSBURG 194021,RUSSIA

来源：

PHYSICA C | 1993年 / 211卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90724-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We measured far infrared transmittance and reflectance spectra of thin YBa2Cu3O7-x films grown on MgO. At 295 K reflectance measurements were extended up to 20 000 cm-1. We model the dielectric function of Y1Ba2Cu3O7-x by using free-carrier and mid-infrared terms. Our data are consistent with a huge mid-infrared component, in which low frequency contributions are very important and appear to be temperature dependent. The free-carrier term is described by the usual Drude model in the normal phase and by a two-fluid model in the superconducting phase.

引用

页码：22 / 28

页数：7

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