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11 Feb 2013

Volume 102, Issue 6, Articles (06xxxx)

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Appl. Phys. Lett. 102, 063701 (2013); http://dx.doi.org/10.1063/1.4790115 (5 pages)

In-Tsang Lin, Hong-Chang Yang, and Jyh-Horng Chen
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Low-loss tunable metamaterials using superconducting circuits with Josephson junctions

P. Jung, S. Butz, S. V. Shitov, and A. V. Ustinov

Appl. Phys. Lett. 102, 062601 (2013); http://dx.doi.org/10.1063/1.4792705 (4 pages)

Online Publication Date: 14 February 2013

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We report on experiments with superconducting metamaterials containing Josephson junctions. In these structures, split-ring resonators used in conventional metamaterials are replaced by superconducting loops that are interrupted by Josephson junctions, so called rf-SQUIDs. Like the split-ring resonators, these elements can be seen as LC-resonators that couple to the magnetic field. The advantage of superconducting thin-film metamaterials is that, due to the tunable intrinsic inductance of the Josephson junction, the resonance frequency of the rf-SQUID can be changed by applying an external dc magnetic field. We present experimental results that demonstrate the tunability of the resonance frequency of these devices.
Show PACS
85.25.Dq Superconducting quantum interference devices (SQUIDs)
74.50.+r Tunneling phenomena; Josephson effects
74.78.-w Superconducting films and low-dimensional structures
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