Terahertz surface resistance of high temperature superconducting thin films

被引：29

作者：

Wilke, I

Khazan, M

Rieck, CT

Kuzel, P

Kaiser, T

Jaekel, C

Kurz, H

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[2] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

[3] Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

[4] Rhein Westfal TH Aachen, Inst Halbleitertech 2, D-52056 Aachen, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 06期

关键词：

D O I：

10.1063/1.372287

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on measurements of the surface resistance of YBa2Cu3Ox thin films at frequencies between 0.087 and 2 THz and temperatures between 50 and 120 K by time-domain terahertz-transmission spectroscopy (TDTTS) and resonant microwave spectroscopy. The determination of the surface resistance of superconducting thin films by TDTTS is extended to higher frequencies and thicker films than previously by numerically solving the complex transmission coefficient. The numerical solution also provides the dielectric function of the YBa2Cu3Ox thin films. The temperature and frequency dependence of the surface resistance of YBa2Cu3Ox thin films in the THz range is successfully explained by a weak coupling model of d-wave superconductivity which incorporates inelastic and elastic scattering. The surface resistance of YBa2Cu3Ox thin films at THz frequencies is compared to the surface resistance of gold and niobium. The advantages of YBa2Cu3Ox thin films for superconducting THz electronic devices are discussed. (C) 2000 American Institute of Physics. [S0021-8979(00)00806-9].

引用

页码：2984 / 2988

页数：5

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