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

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

中国物理B ›› 2010, Vol. 19 ›› Issue (8): 84101-084101.doi: 10.1088/1674-1056/19/8/084101

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

王身云¹, 刘少斌¹, Le-Wei Joshua Li²

(1)College of Information Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China; (2)Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore

收稿日期:2009-09-23 修回日期:2010-01-18 出版日期:2010-08-15 发布日期:2010-08-15
基金资助:
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).

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

Wang Shen-Yun(王身云)^a)b)^†, Liu Shao-Bin(刘少斌)^a), and Le-Wei Joshua Li^b)

^a College of Information Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China; ^b Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore

Received:2009-09-23 Revised:2010-01-18 Online:2010-08-15 Published:2010-08-15
Supported by:
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).

摘要/Abstract

摘要： 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.

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.

Key words: shift operator finite difference time domain method, superconductor, superconductor-dielectric superlattice, high-pass filter

中图分类号: (Multilayers, superlattices, heterostructures)

74.78.Fk

77.22.Ch (Permittivity (dielectric function))

王身云, 刘少斌, Le-Wei Joshua Li. Finite-difference time-domain studies of low-frequency stop band in superconductor-dielectric superlattice[J]. 中国物理B, 2010, 19(8): 84101-084101.

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[J]. Chin. Phys. B, 2010, 19(8): 84101-084101.

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

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

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