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Single superconducting split-ring resonator electrodynamics Michael C. Ricci and Steven M. Anlage
 

Summary: Single superconducting split-ring resonator electrodynamics
Michael C. Ricci and Steven M. Anlage
Center for Superconductivity Research, Department of Physics, University of Maryland, College Park,
Maryland 20742-4111
Received 20 December 2005; accepted 11 May 2006; published online 26 June 2006
We investigate the microwave electrodynamic properties of a single superconducting thin film
split-ring resonator SRR . Transmission data showed a high-Q stop band for a single Nb SRR
Q 4.5 104
at 4.2 K below Tc, and no such feature for a Cu SRR or closed Nb loops. Adding
SRRs increased the bandwidth, but decreased the insertion loss of the features. Placing the Nb SRR
into an array of wires produced a single, elementary negative-index passband Q 2.26 104
at
4.2 K . Changes in the features due to the kinetic inductance were observed. Models for SRR
permeability and wire dielectric response were used to fit the data. 2006 American Institute of
Physics. DOI: 10.1063/1.2216931
Since the end of the last century, many researchers have
been interested in verifying predictions by Veselago1
for ma-
terials with a simultaneously negative permittivity and
permeability . Such materials have a negative index of

  

Source: Anlage, Steven - Center for Superconductivity Research & Department of Physics, University of Maryland at College Park

 

Collections: Materials Science