Millimeter-wave absorption in La-Ba-Cu-O and Y-Ba-Cu-O superconductors
- 1 January 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 37 (1) , 615-618
- https://doi.org/10.1103/physrevb.37.615
Abstract
Millimeter-wave absorption in the new high- superconducting materials La-Ba-Cu-O and Y-Ba-Cu-O has been studied at a frequency of 80 GHz over the temperature range 4-300 K and in the presence of magnetic fields 0-5.5 T. It is found that there are strong correlations between the changes in microwave absorption and the superconducting transitions at 30 K for La-Ba-Cu-O and at 90 K for Y-Ba-Cu-O samples. The Y-Ba-Cu-O samples display additional microwave features near 250 K which may be associated with a higher-temperature superconductivity.
Keywords
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