1202.6305 (H. Malissa et al.)

Superconducting coplanar waveguide resonators for low temperature pulsed
electron spin resonance spectroscopy    [PDF]

H. Malissa, D. I. Schuster, A. M. Tyryshkin, A. A. Houck, S. A. Lyon

We discuss the design and implementation of thin film superconducting coplanar waveguide micro- resonators for pulsed ESR experiments. The performance of the resonators with P doped Si epilayer samples is compared to waveguide resonators under equivalent conditions. The high achievable filling factor even for small sized samples and the relatively high Q-factor result in a sensitivity that is superior to that of conventional waveguide resonators, in particular to spins close to the sample surface. The peak microwave power is on the order of a few microwatts, which is compatible with measurements at ultra low temperatures. We also discuss the effect of the nonuniform microwave magnetic field on the Hahn echo power dependence.

View original: http://arxiv.org/abs/1202.6305