skip to main content

Title: Composite arrays of superconducting microstrip line resonators

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.
Authors:
;  [1] ;  [2] ;  [1] ;  [2] ;  [1] ;  [1] ;  [2] ;  [2]
  1. Institute for Quantum Computing, Waterloo, Ontario N2L 3G1 (Canada)
  2. (Canada)
Publication Date:
OSTI Identifier:
22277960
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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