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.

nonlinearity

metamaterials

superconductor

nonlinear metamaterial

Författare

Cihan Kurter

Philippe Tassin

Chalmers, Teknisk fysik, Kondenserade materiens teori

Alexander P. Zhuravel

Lei Zhang

Thomas Koschny

Alexey V. Ustinov

Costas M. Soukoulis

Steven M. Anlage

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 100 12 121906-

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Atom- och molekylfysik och optik

Annan elektroteknik och elektronik

Den kondenserade materiens fysik

DOI

10.1063/1.3696297