Josephson plasma oscillations in confined layered superconductors

被引:3
|
作者
Khankina, S. I. [1 ]
Yakovenko, V. M. [1 ]
Yampol'skii, V. A. [1 ,2 ]
机构
[1] A Ya Usikov Inst Radiophys & Elect NAS Ukraine, UA-61085 Kharkov, Ukraine
[2] Abdus Salam Int Ctr Theoret Phys, I-34151 Trieste, Italy
关键词
bismuth compounds; calcium compounds; electromagnetic oscillations; electromagnetic wave propagation; harmonic generation; high-temperature superconductors; Josephson effect; plasma oscillations; strontium compounds; terahertz wave spectra; RADIATION; LATTICE; WAVES; PHASE;
D O I
10.1063/1.3691528
中图分类号
O59 [应用物理学];
学科分类号
摘要
Intrinsic electromagnetic oscillations were investigated in layered superconductors of finite dimensions, filling a rectangular resonator. Spectra of both ordinary and extraordinary eigenmodes were obtained. A nonlinear effect of decreasing eigenfrequencies of extraordinary modes was analyzed and generation of the third harmonic of oscillations was studied. A nonlinearity of the system is related to a nonlinear dependence of the Josephson current density across superconducting layers on interlayer phase difference of the order parameter. Josephson plasma waves running along a waveguide filled with a layered superconductor were investigated as well as nonlinear effects appearing during propagations of these waves. In addition, in the work, an effect of the slowing down of terahertz waves in waveguides, which is caused by a mutual effect of nonlinearity and damping of waves is predicted. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3691528]
引用
收藏
页码:193 / 198
页数:6
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