Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA
Daimeng Zhang
Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742-3285, USA
L. V. Filippenko
Laboratory of Superconducting Devices for Signal Detection and Processing, Kotelnikov Institute of Radio Engineering and Electronics, Moscow 125009, Russia
V. P. Koshelets
Laboratory of Superconducting Devices for Signal Detection and Processing, Kotelnikov Institute of Radio Engineering and Electronics, Moscow 125009, Russia
Steven M. Anlage
Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA
We demonstrate a low-dissipation dielectric metamaterial with tunable properties based on the Josephson effect. Superconducting wires loaded with regularly spaced Josephson junctions (critical current Ic ≈ 0.25 μA) spanning a K-band waveguide and aligned with the microwave electric fields create a superconducting dielectric metamaterial. Applied dc current tunes the cutoff frequency and effective permittivity of this unique electric metamaterial. The results are in agreement with an analytical model for microwave transmission through the artificial dielectric medium.
