Microwave loss and intermodulation in Tl2Ba2CaCu2Oy thin films

被引:39
作者
Willemsen, BA [1 ]
Kihlstrom, KE
Dahm, T
Scalapino, DJ
Gowe, B
Bonn, DA
Hardy, WN
机构
[1] Superconductor Technol Inc, Santa Barbara, CA 93111 USA
[2] Westmont Coll, Dept Phys, Santa Barbara, CA 93108 USA
[3] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[4] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V5Z 1M9, Canada
来源
PHYSICAL REVIEW B | 1998年 / 58卷 / 10期
关键词
D O I
10.1103/PhysRevB.58.6650
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A superconducting microstrip hairpin resonator is used as a tool to study the linear and nonlinear microwave response of TBCCO thin films. We extract the surface resistance R-S(T), penetration depth lambda(T), and intermodulation critical current J(IMD)(T) for such a resonator at 4.2 GHz. The surface impedance results compare well with cavity perturbation measurements on portions of the same wafer. J(IMD)(T) is compared against theoretical models for the intrinsic nonlinear response of s- and d-wave superconductors. We demonstrate that the de critical current J(c) and J(IMD) are distinct material parameters, describing different physical regimes.
引用
收藏
页码:6650 / 6654
页数:5
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