CUED Publications database

High Tc superconducting Plasmonic Bi2Sr2CaCu2O8+δ Terahertz Metamaterial

Kalhor, S and Ghanaatshoar, M and Kashiwagi, T and Kadowaki, K and Kelly, M and Delfanazari, K (2017) High Tc superconducting Plasmonic Bi2Sr2CaCu2O8+δ Terahertz Metamaterial. In: Moscow International Symposium on Magnetism (MISM), 2017-7-1 to 2017-7-5, Moscow, Russia..

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The layered high-Tc superconductors are strongly anisotropic systems whose structure is composed of alternating metallic (and superconducting, below Tc) CuO2 and insulating double layers. They are intrinsically left-handed materials, showing the existence of surface waves and realizing negative refractive index metamaterials. Their electromagnetic response is derived from Cooper pairs that have analogous behaviour to electrons in metals at high frequencies. Among the layered superconductors, Bi2Sr2CaCu2O8+δ (Bi-2212) has received particular attention because it can also be a powerful and coherent quantum terahertz (THz) wave source. The THz wave has been found to be necessary for the applications, especially to quantum information and computation. Here, we report the first demonstration of a ​superconducting Bi-2212 THz metamaterial. We present the temperature and magnetic field induced resonance switching and frequency tuning of subwavelength plasmonic Bi-2212 split-ring resonators (SRR).

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 30 Jan 2018 01:21
Last Modified: 18 Feb 2021 18:25