Composite arrays of superconducting microstrip line resonators

Journal Article · Fri Mar 07 04:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4866691· OSTI ID:22277960

Miao, G. X. ^[1]; Benningshof, O. W. B. ^[1]; Taminiau, I. A. J. ^[1]; Cory, D. G. ^[1]

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1. Institute for Quantum Computing, Waterloo, Ontario N2L 3G1 (Canada)

A novel design of an array of half-wave superconductive microstrip resonators is described. The resonator is intended to be useful for electron spin resonance studies of thin film samples at cryogenic temperatures. It achieves a high quality factor, has a small mode-volume, and creates a uniform magnetic field in a plane above the resonator. The device is made of thin film Niobium on sapphire wafer and is tested with a static magnetic field. Variation of Q-factor versus the magnetic field's strength at different temperatures is reported and is in a good agreement with simulation when the loss due to the vortices is included. Also, the power-dependence response of the resonator is shown in experiments and is verified by capturing the nonlinearity associated with the surface impedance of the superconducting film into the circuit model of the device.

• OSTI ID: 22277960
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 9 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTERIZED SIMULATION
ELECTRON SPIN RESONANCE
IMPEDANCE
MAGNETIC FIELDS
NIOBIUM
NONLINEAR PROBLEMS
QUALITY FACTOR
RESONATORS
SAPPHIRE
SUPERCONDUCTING FILMS
SURFACES
THIN FILMS
VARIATIONS
VORTICES