Circular dichroism observed in bismuthate superconductors

We report observation of circular dichroism (CD) in reflection from two bismuthate superconducting thin films, rubidium barium bismuthate. This signal is similar to that recently reported in cuprate materials, with the exception that one sample shows a dramatic rise in the observed CD variance at th...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1991-05, Vol.43 (13B), p.11408-11410
Main Authors: LYONS, K. B, DILLON, J. F, HELLMAN, E. S, HARTFORD, E. H, MCGLASHAN-POWELL, M
Format: Article
Language:English
Subjects:
360603 - Materials- Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
Condensed matter: electronic structure, electrical, magnetic, and optical properties
DICHROISM
Exact sciences and technology
LIGHT SCATTERING
MATERIALS SCIENCE
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
Physics
Properties of type I and type II superconductors
QUATERNARY COMPOUNDS
REFLECTIVITY
RUBIDIUM COMPOUNDS
SCATTERING
SUPERCONDUCTING FILMS
Superconductivity
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
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Summary:We report observation of circular dichroism (CD) in reflection from two bismuthate superconducting thin films, rubidium barium bismuthate. This signal is similar to that recently reported in cuprate materials, with the exception that one sample shows a dramatic rise in the observed CD variance at the superconducting transition. These results suggest that a mechanism other than anyons, and thus perhaps unrelated to the superconductivity mechanism itself, might be necessary to explain the CD observed.
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.43.11408