Finite-difference time-domain studies of low-frequency stop band in superconductor-dielectric superlattice

doi:10.1088/1674-1056/19/8/084101

Abstract The transmission coefficients of electromagnetic (EM) waves due to a superconductor-dielectric superlattice are numerically calculated. Shift operator finite difference time domain (SO-FDTD) method is used in the analysis. By using the SO-FDTD method, the transmission spectrum is obtained and its characteristics are investigated for different thicknesses of superconductor layers and dielectric layers, from which a stop band starting from zero frequency can be apparently observed. The relation between this low-frequency stop band and relative temperature, and also the London penetration depth at a superconductor temperature of zero degree are discussed, separately. The low-frequency stop band properties of superconductor-dielectric superlattice thus are well disclosed.

Keywords: shift operator finite difference time domain method superconductor superconductor-dielectric superlattice high-pass filter

Received: 23 September 2009
Revised: 18 January 2010
Accepted manuscript online:

PACS:	74.78.Fk	(Multilayers, superlattices, heterostructures)
	74.25.Nf
	77.22.Ch	(Permittivity (dielectric function))

Fund: Project supported partly by the Open Research Program in State Key Laboratory of Millimeter Waves of China (Grant No. K200802), and partly by the National Natural Science Foundation of China (Grant No. 60971122).

Cite this article:

Wang Shen-Yun(王身云), Liu Shao-Bin(刘少斌), and Le-Wei Joshua Li Finite-difference time-domain studies of low-frequency stop band in superconductor-dielectric superlattice 2010 Chin. Phys. B 19 084101

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Finite-difference time-domain studies of low-frequency stop band in superconductor-dielectric superlattice

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