Bulk and surface electromagnetic response of metallic metamaterials to convection electrons
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Institute of PhysicsDate
2011-08-15Citation
10.1063/1.3625952
Applied Physics Letters 99.7 (2011): 071106
ISSN
0003-6951DOI
10.1063/1.3625952Funded by
This work was supported by National Research Foundation of Korea Grant funded by the Korean Government (grant code: 2009-0083512).Editor's Version
http://dx.doi.org/10.1063/1.3625952Subjects
Metamaterials; Cherenkov radiation; Dielectrics; Dielectric response; Refractive index; FísicaNote
The following article appeared in Applied Physics Letters 99.7 (2011): 071106 and may be found at http://scitation.aip.org/content/aip/journal/apl/99/7/10.1063/1.3625952?ver=pdfcovRights
© 2011 American Institute of PhysicsAbstract
The electromagnetic response of three-dimensional metallic metamaterials with isotropic effective index of refraction to fast-moving electrons is studied by numerical simulations. The considered metamaterials can support Cerenkov radiation [P. A. Cherenkov, Dokl. Akad. Nauk SSSR 2, 451 (1934)], and their effective dielectric behavior is confirmed by the detailed angular dependence of the generated radiation cone on the kinetic energy of electrons. Moreover, in addition to the predicted bulk modes, surface electromagnetic excitation is observed in a specific type of metamaterials and its dispersion is sensitive to the thickness of the subwavelength rods.
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Google Scholar:So, Jinkyu
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Park, Gunsik
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García Vidal, Fco. José
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Jang, Kyu-Ha
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