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The modes in a three-layered structure made of single-negative materials have been investigated. For the propagation mode, the tunneling mode can be formed in the structure. When tunneling mode appears the variations of electric field distribution and the transmission with incident angle are studied. We find that there appear two new localized modes when the thickness of the middle layer changes. The frequency interval of the two localized modes can be increased by decreasing the thickness of the middle layer. For the guided mode, the electromagnetic wave is evanescent in semi-infinite vacuum which is on the both sides of the structure. We have analyzed the existence condition of its electromagnetic mode,that is, the dispersion relation. The result shows that a strong local field appears in the interface of the material.
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Keywords:
- single-negative materials /
- resonant tunneling /
- propagation mode /
- guided mode
[1] Guan G S, Jiang H T, Li H Q, Zhang Y W, Chen H, Zhu S Y 2006 Appl. Phys. Lett. 88 211112
[2] Xu J P, Wang L G, Yang Y P 2006 Acta Phys. Sin. 55 2765 (in Chinese) [许静平、王立刚、羊亚平 2006 55 2765]
[3] Jiang H T, Chen H, Li H Q, Zhang Y W, Zhu S Y 2003 Appl. Phys. Lett. 83 5386
[4] Jiang H T, Chen H, Li H Q, Zhang Y W, Zi J, Zhu S Y 2004 Phys. Rev. E 69 066607
[5] Jiang H T, Chen H, Li H Q, Zhang Y W, Zhu S Y 2005 J. Appl. Phys. 98 013101
[6] Jiang H T, Chen H, Zhu S Y 2006 Phys. Rev. E 73 046601
[7] Deng X H, Liu N H, Liu G Q 2007 Acta Phys. Sin. 56 7280 (in Chinese) [邓新华、刘念华、刘根泉 2007 56 7280] 〖8] Alù A, Engheta N 2003 IEEE Trans. Antennas Propag. 51 2558
[8] Dong L J, Jiang H T, Yang C Q, Shi Y L 2007 Acta Phys. Sin. 56 4657 (in Chinese) [董丽娟、江海涛、杨成全、石云龙 2007 56 4657]
[9] Ruppin R 2000 Phys. Lett. A 277 61
[10] Ruppin R 2001 J. Phys.: Condens. Matter 13 1811
[11] Chen L, He S L, Shen L F 2003 Acta Phys. Sin. 52 2386 (in Chinese) [陈 龙、何赛灵、沈林放 2003 52 2386]
[12] Zhang R, Yang Y P 2010 Acta Phys. Sin. 59 2451 (in Chinese) [张 睿、羊亚平 2010 59 2451]
[13] Eleftheriades G V, Iyer A K, Kremer P C 2002 IEEE Trans. Microwave Theor. Technol. 50 2702
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[1] Guan G S, Jiang H T, Li H Q, Zhang Y W, Chen H, Zhu S Y 2006 Appl. Phys. Lett. 88 211112
[2] Xu J P, Wang L G, Yang Y P 2006 Acta Phys. Sin. 55 2765 (in Chinese) [许静平、王立刚、羊亚平 2006 55 2765]
[3] Jiang H T, Chen H, Li H Q, Zhang Y W, Zhu S Y 2003 Appl. Phys. Lett. 83 5386
[4] Jiang H T, Chen H, Li H Q, Zhang Y W, Zi J, Zhu S Y 2004 Phys. Rev. E 69 066607
[5] Jiang H T, Chen H, Li H Q, Zhang Y W, Zhu S Y 2005 J. Appl. Phys. 98 013101
[6] Jiang H T, Chen H, Zhu S Y 2006 Phys. Rev. E 73 046601
[7] Deng X H, Liu N H, Liu G Q 2007 Acta Phys. Sin. 56 7280 (in Chinese) [邓新华、刘念华、刘根泉 2007 56 7280] 〖8] Alù A, Engheta N 2003 IEEE Trans. Antennas Propag. 51 2558
[8] Dong L J, Jiang H T, Yang C Q, Shi Y L 2007 Acta Phys. Sin. 56 4657 (in Chinese) [董丽娟、江海涛、杨成全、石云龙 2007 56 4657]
[9] Ruppin R 2000 Phys. Lett. A 277 61
[10] Ruppin R 2001 J. Phys.: Condens. Matter 13 1811
[11] Chen L, He S L, Shen L F 2003 Acta Phys. Sin. 52 2386 (in Chinese) [陈 龙、何赛灵、沈林放 2003 52 2386]
[12] Zhang R, Yang Y P 2010 Acta Phys. Sin. 59 2451 (in Chinese) [张 睿、羊亚平 2010 59 2451]
[13] Eleftheriades G V, Iyer A K, Kremer P C 2002 IEEE Trans. Microwave Theor. Technol. 50 2702
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