title: Microwave resonances in dielectric samples probed in Corbino geometry: simulation and experiment.
abstract: The Corbino approach, where the sample of interest terminates a coaxial cable, is a well-established method for microwave spectroscopy. If the sample is dielectric and if the probe geometry basically forms a conductive cavity, this combination can sustain well-defined microwave resonances that are detrimental for broadband measurements. Here, we present detailed simulations and measurements to investigate the resonance frequencies as a function of sample and probe size and of sample permittivity. This allows a quantitative optimization to increase the frequency of the lowest-lying resonance.
authors.affiliation: 1. Physikalisches Institut, Universität Stuttgart, D-70550 Stuttgart, Germany.
authors.forename: M Maximilian
authors.initials: MM
authors.lastname: Felger
authors.forename: Martin
authors.initials: M
authors.lastname: Dressel
authors.forename: Marc
authors.initials: M
authors.lastname: Scheffler