Carrier doping in Pr_{1+x}Ba_{2-x}Cu_3O_7 studied by NMR

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dc.creatorPieper, M. W.
dc.creatorWiekhorst, F.
dc.creatorWolf, T.
dc.date1998-03-27
dc.date1998-05-28
dc.date.accessioned2026-07-07T03:10:13Z
dc.date.available2026-07-07T03:10:13Z
dc.descriptionWe investigated the type of the carriers doped in the CuO$_2$-planes of non-superconducting Pr$_{1+x}$Ba$_{2-x}$Cu$_3$O$_7$ single crystals by nuclear magnetic resonance of Pr and chain-site Cu. The different spectra in the solid solution system show that the holes in Pr-rich crystals are localized in states similar to the ones in stoichiometric samples, that is in the $4f^2-2pπ$-hybridization band proposed by Fehrenbacher and Rice. In contrast, the spectra of crystals prepared under conditions favoring Ba-rich phases indicate the presence of holes in Zhang-Rice singlets in the CuO$_2$-plane. Our results strongly support the model that superconductivity reported recently for Pr123-crystals is due to Ba-rich regions in the inhomogeneous samples.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9803336
dc.identifierhttp://arxiv.org/abs/cond-mat/9803336
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28174
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleCarrier doping in Pr_{1+x}Ba_{2-x}Cu_3O_7 studied by NMR
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