Terahertz superconductor metamaterial

Weili Zhang, Hou‐Tong Chen, Ranjan Singh, Wei Cao, Jianqiang Gu, Jiaguang Han, Mingxia He, Zhen Tian, Qirong Xing, Jingwen W. Zhang
2010-08-16

We characterize the behavior of split ring resonators made up of high transition temperature yttrium barium copper oxide superconductor using terahertz time-domain spectroscopy measurements and numerical simulations. The superconductor metamaterial is found to show a remarkable change in the transmission spectra at the fundamental inductive-capacitive resonance as the temperature dips below the critical transition temperature. This resonance switching effect is normally absent in traditional metamaterials made up of regular metals. The temperature-dependent resonance behavior of the superconducting metamaterial would lead to development of low loss terahertz switches at cryogenic temperatures.
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2010-08-16
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Weili Zhang
Hou‐Tong Chen
Ranjan Singh
Wei Cao
Jianqiang Gu
Jiaguang Han
Mingxia He
Zhen Tian
Qirong Xing
Jingwen W. Zhang
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