43 citations · 120 across the 9 of their papers we have counts for
9 papers
Microscopic Investigation of rf Vortex Nucleation in Nb3Sn Films Using a Near-Field Magnetic Microwave Microscope
Chung-Yang Wang, Zeming Sun, Thomas Oseroff +2
We use a near-field magnetic microwave microscope to investigate and compare rf vortex nucleation in two superconducting radio-frequency (SRF)-quality Nb3Sn films fabricated by dif…
Microwave Microscope Studies of Trapped Vortex Dynamics in Superconductors
Chung-Yang Wang, Steven M. Anlage
Trapped vortices in superconductors introduce residual resistance in superconducting radio-frequency (SRF) cavities and disrupt the operation of superconducting quantum and digital…
Revealing isotropic abundant low-energy excitations in UTe through complex microwave surface impedance
Arthur Carlton-Jones, Alonso Suarez, Yun-Suk Eo +5
The complex surface impedance is a well-established tool to study the super- and normal-fluid responses of superconductors. Fundamental properties of the superconductor, such as th…
Microscopic Examination of SRF-quality Nb Films through Local Nonlinear Microwave Response
Chung-Yang Wang, Carlota Pereira, Stewart Leith +2
The performance of superconducting radio-frequency (SRF) cavities is sometimes limited by local defects. To investigate the RF properties of these local defects, especially those t…
Nanoscale Electrodynamic Response of Nb Superconductors
Tamin Tai, Behnood G. Ghamsari, Steven M. Anlage
Our objective is to study the extreme and local electrodynamic properties of Niobium (Nb), and to relate these properties to specific defects that limit the ultimate RF performance…
Superconducting RF Metamaterials Made with Magnetically Active Planar Spirals
C. Kurter, A. P. Zhuravel, J. Abrahams +3
Superconducting metamaterials combine the advantages of low-loss, large inductance (with the addition of kinetic inductance), and extreme tunability compared to their normal metal…
Superconducting Material Diagnostics using a Scanning Near-Field Microwave Microscope
Steven M. Anlage, D. E. Steinhauer, C. P. Vlahacos +5
We have developed scanning near-field microwave microscopes which can image electrodynamic properties of superconducting materials on length scales down to about 2 m. The micros…
Frequency Following Imaging of Electric Fields from Resonant Superconducting Devices using a Scanning Near-Field Microwave Microscope
Ashfaq S. Thanawalla, B. J. Feenstra, Wensheng Hu +5
We have developed a scanning near-field microwave microscope that operates at cryogenic temperatures. Our system uses an open-ended coaxial probe with a 200 mm inner conductor diam…
Near-Field Scanning Microwave Microscopy: Measuring Local Microwave Properties and Electric Field Distributions
B. J. Feenstra, C. P. Vlahacos, Ashfaq S. Thanawalla +4
We describe the near-field microwave microscopy of microwave devices on a length scale much smaller than the wavelength used for imaging. Our microscope can be operated in two poss…