Microwave Nonlinearity And Photoresponse Of Superconducting Resonators With Columnar Defect Micro-channels
Document Type
Article
Publication Date
9-2014
Publication Source
Superconductor Science and Technology
Volume Number
27
Issue Number
9
ISSN
0953-2048
Abstract
Micro-channels of nanosized columnar tracks were planted by heavy-ion irradiation into superconducting microwave microstrip resonators that were patterned from YBa2Cu3O7-x thin films on LaAlO3 substrates. Three different ion fluences were used, producing different column densities, with each fluence having a successively greater impact on the microwave nonlinearity of the device, as compared to a control sample. Photoresponse (PR) images made with a 638 nm rastered laser beam revealed that the channel is a location of enhanced PR and a hot spot for the generation of intermodulation distortion. The microwave PR technique was also advanced in this work by investigating the role of coupling strength on the distribution of PR between inductive and resistive components.
Recommended Citation
Remillard, S. K., D. Kirkendall, G. Ghigo, R. Gerbaldo, L. Gozzelino, F. Laviano, Z. Yang, et al. “Microwave Nonlinearity And Photoresponse Of Superconducting Resonators With Columnar Defect Micro-Channels.” Superconductor Science and Technology 27, no. 9 (September 1, 2014): 095006. doi:10.1088/0953-2048/27/9/095006.
