Raman measurements of Y1-xEuxBa2Cu3O7: Comparison with Y1-xPrxBa2Cu3O7

In Sang Yang, G. Burns, F. H. Dacol, J. F. Bringley, S. S. Trail

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We present polarized Raman measurements of small single crystals embedded in Y1-xEuxBa2Cu3O7 polycrystalline pellets. Superconductivity remains unsuppressed through the entire range of x. With increasing x, the frequency increase of the Ba-Ba vibrational mode and the apical oxygen Oz-Oz vibrational mode, is significantly smaller than in Y1-xPrxBa2 Cu3O7, even though similar changes in interatomic distances occur in both systems. These results support the assertion that the frequency changes of Ba-Ba and Oz-Oz modes are due to changes in electronic states and not due to interatomic distances.

Original languageEnglish
Pages (from-to)31-36
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume171
Issue number1-2
DOIs
StatePublished - 15 Oct 1990

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