Sep, 2016
Metal-insulator transition and pseudogap in Bi1.76Pb0.35Sr1.89CuO6+delta high-T-c cuprates
PHYSICAL REVIEW B
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- Volume
- 94
- Number
- 11
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevB.94.115123
- Publisher
- AMER PHYSICAL SOC
It is inferred from bulk-sensitive muon Knight shift measurement for a Bi1.76Pb0.35Sr1.89CuO6+delta single-layer cuprate that the metal-insulator (MI) transition (in the low-temperature limit, T -> 0) occurs at the critical hole concentration P = PMI = 0.09(1), where the electronic density of states (DOS) at the Fermi level is reduced to zero by the pseudogap irrespective of the Neel order or spin glass magnetism. Superconductivity also appears for P > PMI, suggesting that this feature is controlled by the MI transition. More interestingly, the magnitude of the DOS reduction induced by the pseudogap remains unchanged over a wide doping range (0.1 <= p <= 0.2), indicating that the pseudogap remains as a hallmark of the MI transition for P > PMI.
- Link information
- ID information
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- DOI : 10.1103/PhysRevB.94.115123
- ISSN : 2469-9950
- eISSN : 2469-9969
- ORCID - Put Code : 50675394
- Web of Science ID : WOS:000383234700003