Wide-band tuneability, nonlinear transmission, and dynamic multistability in SQUID metamaterials

G. P. Tsironis, N. Lazarides, I. Margaris

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Superconducting metamaterials comprising rf Superconducting QUantum Interference Devices (SQUIDs) have been recently realized and investigated with respect to their tuneability, permeability, and dynamic multistability properties. These properties are a consequence of intrinsic nonlinearities due to the sensitivity of the superconducting state to external stimuli. SQUIDs, made of a superconducting ring interrupted by a Josephson junction, possess yet another source of nonlinearity, which makes them widely tuneable with an applied dc dlux. A model SQUID metamaterial, based on electric equivalent circuits, is used in the weak coupling approximation to demonstrate the dc flux tuneability, dynamic multistability, and nonlinear transmission in SQUID metamaterials comprising non-hysteretic SQUIDs. The model equations reproduce the experimentally observed tuneability patterns and predict tuneability with the power of an applied ac magnetic field. Moreover, the results indicate the opening of nonlinear frequency bands for energy transmission through SQUID metamaterials, for sufficiently strong ac fields.

Original languageEnglish
Pages (from-to)579-588
Number of pages10
JournalApplied Physics A: Materials Science and Processing
Volume117
Issue number2
DOIs
Publication statusPublished - Oct 9 2014
Externally publishedYes

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SQUIDs
Metamaterials
Equivalent circuits
Frequency bands
Magnetic fields
Fluxes

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)

Cite this

Wide-band tuneability, nonlinear transmission, and dynamic multistability in SQUID metamaterials. / Tsironis, G. P.; Lazarides, N.; Margaris, I.

In: Applied Physics A: Materials Science and Processing, Vol. 117, No. 2, 09.10.2014, p. 579-588.

Research output: Contribution to journalArticle

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