TY - JOUR
T1 - Quantitative modeling of superconducting planar resonators for electron spin resonance
AU - Weichselbaumer, Stefan
AU - Natzkin, Petio
AU - Zollitsch, Christoph W.
AU - Weiler, Mathias
AU - Gross, Rudolf
AU - Huebl, Hans
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/8/12
Y1 - 2019/8/12
N2 - We present three designs for planar superconducting microwave resonators for electron spin resonance (ESR) experiments. We implement finite-element simulations to calculate the resonance frequency and quality factors as well as the three-dimensional microwave magnetic field distribution of the resonators. One particular resonator design offers an increased homogeneity of the microwave magnetic field while the other two show a better confinement of the mode volume. We extend our model simulations to calculate the collective-coupling rate between a spin ensemble and a microwave resonator in the presence of an inhomogeneous magnetic resonator field. Continuous-wave ESR experiments of phosphorus donors in Sinat demonstrate the feasibility of our resonators for magnetic resonance experiments. We extract the collective-coupling rate and find good agreement with our simulation results, corroborating our model approach. Finally, we discuss specific application cases for the different resonator designs.
AB - We present three designs for planar superconducting microwave resonators for electron spin resonance (ESR) experiments. We implement finite-element simulations to calculate the resonance frequency and quality factors as well as the three-dimensional microwave magnetic field distribution of the resonators. One particular resonator design offers an increased homogeneity of the microwave magnetic field while the other two show a better confinement of the mode volume. We extend our model simulations to calculate the collective-coupling rate between a spin ensemble and a microwave resonator in the presence of an inhomogeneous magnetic resonator field. Continuous-wave ESR experiments of phosphorus donors in Sinat demonstrate the feasibility of our resonators for magnetic resonance experiments. We extract the collective-coupling rate and find good agreement with our simulation results, corroborating our model approach. Finally, we discuss specific application cases for the different resonator designs.
UR - http://www.scopus.com/inward/record.url?scp=85072016847&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.12.024021
DO - 10.1103/PhysRevApplied.12.024021
M3 - Article
AN - SCOPUS:85072016847
SN - 2331-7019
VL - 12
JO - Physical Review Applied
JF - Physical Review Applied
IS - 2
M1 - 024021
ER -