Switching nonlinearity in a superconductor-enhanced metamaterial
Artikel i vetenskaplig tidskrift, 2012
We demonstrate a nonlinear metamaterial that can be switched between low and high transmission by controlling the power level of the incident beam. The origin of this nonlinear response is the superconducting Nb thin film employed in the metamaterial structure. We show that with moderate RF power of about 22 dBm it is possible to quench the superconducting state as a result of extremely strong current densities at the corners of the metamaterial's split-ring resonators. We measure a transmission contrast of 10 dB and a change in group delay of 70 ns between the low and high power states.
superconductor
nonlinearity
metamaterials
nonlinear metamaterial
Författare
Cihan Kurter
University of Maryland
Philippe Tassin
Vrije Universiteit Brüssel (VUB)
Iowa State University
Alexander P. Zhuravel
National Academy of Sciences in Ukraine
Lei Zhang
Iowa State University
Thomas Koschny
Iowa State University
Alexey V. Ustinov
Karlsruher Institut für Technologie (KIT)
Costas M. Soukoulis
Institute of Electronic Structure and Lasers (IESL)
Iowa State University
Steven M. Anlage
Karlsruher Institut für Technologie (KIT)
University of Maryland
Applied Physics Letters
0003-6951 (ISSN) 1077-3118 (eISSN)
Vol. 100 12 121906-Styrkeområden
Nanovetenskap och nanoteknik (SO 2010-2017, EI 2018-)
Ämneskategorier
Atom- och molekylfysik och optik
Annan elektroteknik och elektronik
Den kondenserade materiens fysik
DOI
10.1063/1.3696297