High-resolution XANES study of Eu(Ba1-xRx)2Cu3O7+δ (R = Eu, Pr)

Details High-resolution XANES study of Eu(Ba1-xRx)2Cu3O7+δ (R = Eu, Pr) High-resolution XANES study of Eu(Ba1-xRx)2Cu3O7+δ (R = Eu, Pr)

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006njph....8..215c&link_type=abstract

New Journal of Physics, Volume 8, Issue 9, pp. 215 (2006).

Physics

1

Scientific paper

We have probed the distribution of hole carriers in Eu(Ba1-xEux)2Cu3O7 + δ (x = 0 0.2) and Eu(Ba1-xPrx)2Cu3O7 + δ (x = 0 0.25) by O K-edge and Cu L-edge x-ray absorption spectra. Upon Eu and Pr substitution at the Ba site in Eu(Ba1 - xRx)2Cu3O7 + δ, the concentration of holes in the CuO2 planes becomes greatly diminished. The depletion rate of hole carriers within the CuO2 planes in Eu(Ba1 - xPrx)2Cu3O7 + δ is greater than that in Eu(Ba1 - xEux)2Cu3O7 + δ. The rate of Tc suppression with Pr doping in Eu(Ba1-xPrx)2Cu3O7 + δ is accordingly greater than that in Eu(Ba1 - xEux)2Cu3O7 + δ.

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