Raman study of the Hg0.7Cr0.3Sr2CuO4+δ superconductors

Details Raman study of the Hg0.7Cr0.3Sr2CuO4+δ superconductors Raman study of the Hg0.7Cr0.3Sr2CuO4+δ superconductors

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phyc..282.1039l&link_type=abstract

Physica C: Superconductivity, Volume 282, p. 1039-1040.

Physics

Condensed Matter

Superconductivity

3

Scientific paper

The local environment of the apical oxygens (OA) in the Sr-substituted mercury-based superconductor Hg0.7Cr0.3Sr2CuO4+δ is investigated using Raman spectroscopy. Raman spectra from the Sr-substituted Hg-1201 samples show broad OA A1g double peaks at 553 and 583 cm-l, which are 10 - 20 cm-1 lower than the pristine Hg-1201. The existence of, and lower shift of, the double peaks in the Raman spectra of the Sr-substituted Hg-1201 superconductors indicate changes in the environment of OA in the Sr-substituted mercury-based superconductors.

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