rf SQUID metamaterials

Details rf SQUID metamaterials rf SQUID metamaterials

2007-03-15

arxiv.org/abs/cond-mat/0703400v1

Appl. Phys. Lett. 16, 163501 (2007)

Physics

Condensed Matter

Materials Science

3 pages, 4 figures, accepted by Applied Physics Letters, in production

Scientific paper

An rf superconducting quantum interference device (SQUID) array in an alternating magnetic field is investigated with respect to its effective magnetic permeability, within the effective medium approximation. This system acts as an inherently nonlinear magnetic metamaterial, leading to negative magnetic response, and thus negative permeability, above the resonance frequency of the individual SQUIDs. Moreover, the permeability exhibits oscillatory behavior at low field intensities, allowing its tuning by a slight change of the intensity of the applied field.

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