NONLINEAR MICROWAVE PROPERTIES OF SUPERCONDUCTING NB MICROSTRIP RESONATORS

被引:93
作者
GOLOSOVSKY, MA [1 ]
SNORTLAND, HJ [1 ]
BEASLEY, MR [1 ]
机构
[1] STANFORD UNIV,EDWARD L GINZTON LAB,STANFORD,CA 94305
来源
PHYSICAL REVIEW B | 1995年 / 51卷 / 10期
关键词
D O I
10.1103/PhysRevB.51.6462
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We present measurements of the nonlinear surface impedance ZS=RS+iXS of thin-film Nb micro- strip resonators. We demonstrate correlation between material properties of the films and the occurrence of nonlinearity. The nonlinearity is characterized using a dimensionless parameter r=ΔRS(P)/ΔXS(P). We make a short survey of the mechanisms of nonlinear electrodynamics of superconductors and demonstrate that our experimental results are best accounted for by the vortex penetration into the grains. © 1995 The American Physical Society.
引用
收藏
页码:6462 / 6469
页数:8
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