Magnetic response of metamaterials at 100 terahertz

被引：1337
作者：
Linden, S
Enkrich, C
Wegener, M
Zhou, JF
Koschny, T
Soukoulis, CM [1 ]
机构：
[1] Iowa State Univ, Ames Lab, Ames, IA 50011 USA
[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
[3] Fdn Res & Technol Hellas, Inst Elect Struct & Laser, Iraklion 71110, Crete, Greece
[4] Forschungszentrum Karlsruhe Helmholtz Gemeinschaf, Inst Nanotechnol, D-76021 Karlsruhe, Germany
[5] Univ Karlsruhe TH, Inst Angew Phys, D-76131 Karlsruhe, Germany
来源：
SCIENCE | 2004年 / 306卷 / 5700期
关键词：
D O I：
10.1126/science.1105371
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
An array of single nonmagnetic metallic split rings can be used to implement a magnetic resonance, which arises from an inductor-capacitor circuit (LC) resonance, at 100-terahertz frequency. The excitation of the LC resonance in the normal-incidence geometry used in our experiments occurs through the coupling of the electric field of the incident light to the capacitance. The measured optical spectra of, the nanofabricated gold structures come very close to the theoretical expectations. Additional numerical simulations show that our structures exhibit a frequency range with negative permeability for a beam configuration in which the magnetic field couples to the LC resonance. Together with an electric response that has negative permittivity, this can lead to materials with a negative index of refraction.
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收藏
页码：1351 / 1353
页数：3
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