Evidence for intrinsic impurities in the high-temperature superconductor Bi2Sr2CaCu2O8+δ from O17 nuclear magnetic resonance
Bo Chen, Sutirtha Mukhopadhyay, W. P. Halperin, Prasenjit Guptasarma, D. G. Hinks
DOI 10.1103/PhysRevB.77.052508 · Physical Review B
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Abstract
We have found that high quality crystals of Bi2Sr2CaCu2O8+δ (Bi-2212) have intrinsic magnetic defects that depend on oxygen doping. Our O17 nuclear magnetic resonance spectra provide evidence that local moments form in the CuO2 plane in both normal and superconducting states. We suggest that these magnetic impurities are related to the electronic disorder that scanning tunneling microscopy experiments identify with the oxygen dopant atoms.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 75 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 95 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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