Recent experiments by Mertz et al (Phys. Rev. B55, 9160, 1997) demonstrated that the loss of superconductivity upon Pr doping is associated with the change of the character of the oxygen holes from pσ to pπ. This experiment sheds new light onto the long-standing problem of Tc suppression by Pr, and helps to rule out a number of theoretical models, leaving only those which predict such a transfer of the O holes. To distinguish between the two models that do predict such an effect, one has to access the ratio of the planar and axial character of the holes in both models. We do so in this paper.
Cite
@article{arxiv.cond-mat/9706259,
title = {Where are holes in Y_{1-x}Pr_xBa2Cu3O7 ?},
author = {I. I. Mazin and A. I. Liechtenstein},
journal= {arXiv preprint arXiv:cond-mat/9706259},
year = {2009}
}