Title :
Spatially resolved analyses of microwave and intermodulation current flow across HTS resonator using low temperature laser scanning microscopy
Author :
Zhuravel, Alexander P. ; Remillard, Stephen ; Anlage, Steven M. ; Barkov, F.L. ; Ustinov, A.V.
Author_Institution :
B. Verkin Inst. for Low Temp. Phys. & Eng., Nat. Acad. of Sci. of Ukraine, Kharkov, Ukraine
Abstract :
We have developed the LTLSM technique to search for intrinsic sources of microwave nonlinearities in large area complicated microwave circuits locally with micrometer spatial resolution. We have compared and analyzed the LTLSM images of JRF(x,y) and JIM(x,y) that were simultaneously obtained in the meander strip T12212/LAO superconducting resonator by this technique. It has been shown that the sources of microwave nonlinearities may not be uniformly distributed across the film, and that IM PR is localized near the peaks in JRF(x,y), with only a very small fraction of the structure contributing to the global IM.
Keywords :
barium compounds; calcium compounds; high-temperature superconductors; intermodulation distortion; lanthanum compounds; microstrip resonators; microwave imaging; superconducting cavity resonators; superconducting thin films; thallium compounds; HTS resonator; Tl2Ba2CaCu2Oy-LaAlO3; high-temperature superconducting film; high-temperature superconductors resonator; intermodulation current flow; low temperature laser scanning microscopy; micrometer spatial resolution; microwave current flow; microwave nonlinearities; microwave resonator; photoresponse; spatially resolved analyses; High temperature superconductors; Image analysis; Masers; Microscopy; Microwave circuits; Microwave theory and techniques; Radio frequency; Spatial resolution; Strips; Superconducting films;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves, 2004. MSMW 04. The Fifth International Kharkov Symposium on
Print_ISBN :
0-7803-8411-3
DOI :
10.1109/MSMW.2004.1345915
