Overdoped cuprates with high-temperature superconducting transitions
Source abstract
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.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
CRETA/CNRS 1 , Grenoble 38042 cedex 9, France
Northern Illinois University 2 Physics Department, , DeKalb, Illinois 60115, USA
Argonne National Laboratory 3 Materials Science Division, , Argonne, Illinois 60439, USA
Institut Néel 4 CEA-CNRS, , Grenoble 38042 cedex 9, France
Aalto University 5 Department of Chemistry, , FI-00076 Aalto, Finland
Stanford University 6 Department of Applied Physics and Materials Science, , Stanford, California 94305, USA
References (24)
Show source-provided references
1. Phys. Rev. B · 2010 · 82 · 10450710.1103/PhysRevB.82.104507 ↗
2. Phys. Rev. B · 2004 · 70 · 17451510.1103/PhysRevB.70.174515 ↗
3. J. Solid State Chem. · 2005 · 178 · 346410.1016/j.jssc.2005.08.029 ↗
4. Solid State Commun. · 2006 · 137 · 60110.1016/j.ssc.2006.01.010 ↗
5. J. Am. Chem. Soc. · 2007 · 129 · 259310.1021/ja0671316 ↗
6. J. Am. Chem. Soc. · 2010 · 132 · 83810.1021/ja9087067 ↗
7. Solid State Commun. · 2011 · 151 · 140010.1016/j.ssc.2011.06.010 ↗
8. Phys. Rev. Lett. · 1999 · 82 · 236610.1103/PhysRevLett.82.2366 ↗
9. Phys. Rev. B · 2008 · 78 · 09450910.1103/PhysRevB.78.094509 ↗
10. Nature (London) · 1993 · 364 · 31510.1038/364315a0 ↗
11. Phys. Rev. B · 2006 · 74 · 10050610.1103/PhysRevB.74.100506 ↗
12. Physica C · 2009 · 469 · 68010.1016/j.physc.2009.03.054 ↗
13. Phys. Rev. B · 2010 · 82 · 21650110.1103/PhysRevB.82.216501 ↗
14. Nature (London) · 1993 · 362 · 22610.1038/362226a0 ↗
15. Physica C · 1990 · 165 · 41910.1016/0921-4534(90)90376-P ↗
16. Phys. Rev. B · 1995 · 51 · 1291110.1103/PhysRevB.51.12911 ↗
17. Physica C · 1991 · 176 · 1910.1016/0921-4534(91)90689-V ↗
18. J. Solid State Chem. · 1991 · 94 · 20610.1016/0022-4596(91)90233-8 ↗
19. Acta Crystallogr., Sect. A: Found. Crystallogr. · 1976 · 32 · 75110.1107/S0567739476001551 ↗
20. Phys. Rev. B · 2012 · 85 · 02451610.1103/PhysRevB.85.024516 ↗
21. Phys. Rev. B · 2012 · 86 · 09450610.1103/PhysRevB.86.094506 ↗
22. Phys. Rev. Lett. · 2010 · 105 · 05700310.1103/PhysRevLett.105.057003 ↗
23. 1996
24. J. Low Temp. Phys. · 1996 · 105 · 137910.1007/BF00753892 ↗