Role of non-linear effects and standing waves in microwave spectroscopy: Corbino measurements on superconductors and VO
arXiv:1810.07784 · doi:10.1063/1.5063862
Abstract
Broadband microwave spectroscopy can probe material properties in wide spectral and temperature ranges, including superconductors at cryogenic temperatures. The quality of such measurements crucially depends on the calibration, which also removes from the obtained spectra signatures of standing waves. Here we consider low-temperature reflection measurements in Corbino geometry, and we show that the non-linear response of superconducting samples close to the critical temperature can lead to strong signatures of standing waves even in a well-calibrated Corbino spectrometer. We demonstrate our findings with microwave measurements as a function of frequency and temperature for a variety of superconducting samples and for different length of the microwave transmission line. Finally we show that such non-linear effects extend beyond the case of superconductors by probing a VO thin film at the insulator-metal transition.
References in corpus (30)
- Electrodynamics of Correlated Electron Materials
- Measurement of Resonant Frequency and Quality Factor of Microwave Resonators: Comparison of Methods
- Hard superconducting gap in InSb nanowires
- Shaping a superconducting dome: Enhanced Cooper-pairing versus suppressed phase coherence in coupled aluminum nanograins
- 1 minute parity lifetime of a NbTiN Cooper-pair transistor
- Determination of the magnetization scaling exponent for single crystal LaSrMnO by broadband microwave surface impedance measurements
- Quasi-Particle Dynamics in Superconducting Aluminum
- A dynamical study of phase fluctuations and their critical slowing down in amorphous superconducting films
- In-situ Broadband Cryogenic Calibration for Two-port Superconducting Microwave Resonators
- Single-gap superconductivity and dome of superfluid density in Nb-doped SrTiO3
- Observing electron spin resonance between 0.1 and 67 GHz at temperatures between 50 mK and 300 K using broadband metallic coplanar waveguides
- Frequency dependent superfluid stiffness in the pseudogap regime in strongly disordered NbN thin films
- Microwave spectroscopy on heavy-fermion systems: probing the dynamics of charges and magnetic moments
- Evidence for multiband superconductivity in the heavy fermion compound UNi2Al3
- Broadband method for precise microwave spectroscopy of superconducting thin films near the critical temperature
- Microwave Spectroscopy Evidence of Superconducting Pairing in the Magnetic-Field-Induced Metallic State of InO Films at Zero Temperature
- Optical properties of VO films at the phase transition: influence of substrate and electronic correlations
- Apparatus for high resolution microwave spectroscopy in strong magnetic fields
- Bolometric technique for high-resolution broadband microwave spectroscopy of ultra-low-loss samples
- Surface-resistance measurements using superconducting stripline resonators
- Dynamic fluctuations in the superconductivity of NbN films from microwave conductivity measurements
- Microwave conductivity of heavy fermions in UPd2Al3
- Microwave inductance of thin metal strips
- New aspects of microwave properties of Nb in the mixed state
- Universal critical behavior in single crystals and films of YBaCuO
- Dynamical scaling of thin film conductivity in zero field
- Superconducting Pb stripline resonators in parallel magnetic field and their application for microwave spectroscopy
- Superconducting fluctuations in FeSeTe thin films probed via microwave spectroscopy
- Joule heating and high frequency nonlinear effects in the surface impedance of high Tc superconductors
- A broadband microwave Corbino spectrometer at He temperatures and high magnetic fields