Switching nonlinearity in a superconductor-enhanced metamaterial
Journal article, 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
Author
Cihan Kurter
University of Maryland
Philippe Tassin
Vrije Universiteit Brussel (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
Karlsruhe Institute of Technology (KIT)
Costas M. Soukoulis
Institute of Electronic Structure and Lasers (IESL)
Iowa State University
Steven M. Anlage
Karlsruhe Institute of Technology (KIT)
University of Maryland
Applied Physics Letters
0003-6951 (ISSN) 1077-3118 (eISSN)
Vol. 100 12 121906-Areas of Advance
Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)
Subject Categories
Atom and Molecular Physics and Optics
Other Electrical Engineering, Electronic Engineering, Information Engineering
Condensed Matter Physics
DOI
10.1063/1.3696297