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Overdoped cuprates with high-temperature superconducting transitions

Year: 2013
Type: article
Abstract: Evidence for high-Tc cuprate superconductivity is found in a region of the phase diagram where non-superconducting Fermi liquid metals are expected. Cu valences estimated independently from both x-ray absorption near-edge spectroscopy and bond valence sum measurements are >2.3, and are in close agreement with each other for structures in the homologous series (Cu0.75Mo0.25)Sr2(Y,Ce)sCu2O5+2s+δ with s = 1, 2, 3, and 4. The record short apical oxygen distance, at odds with current theory, suggests the possibility of a new pairing mechanism. The possibility that the charge reservoir layers are able to screen long range coulomb interactions and thus enhance Tc is discussed.
DOI: 10.1063/1.4817895
Authors: M. Marezio, O. Chmaissem, C. Bougerol, M. Karppinen, H. Yamauchi, T. H. Geballe
Institutions: Centre National de la Recherche Scientifique, Northern Illinois University, Argonne National Laboratory, Institut Néel, Aalto University, Stanford University
Language: English
Open Access status: gold
Estimated APC paid: $2,200
Funders: U.S. Department of Energy, Aalto-Yliopisto, Tekes, Office of Science, Air Force Office of Scientific Research, Argonne National Laboratory
Awards: G102163711, G107546177, G1313983767, G1523888516, G1664757510, G2287611682, G262962599, G3075337988, G495731998, G498139845, G5937958008, G6848031779, G6918803902, G741291543, G969889393, G993149817
OpenAlex ID: W2005443269
FWCI: 0.632
Cites: 23
Cited by: 16
Related to: 10