Approaching the Mott-Hubbard insulator in the 85-K superconductor Bi2(Sr,Ca)3Cu2O8+d by doping with Tm
J. Clayhold, S. J. Hagen, N. P. Ong, J. M. Tarascon, P. Barboux
DOI 10.1103/PhysRevB.39.7320 · Physical Review B
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Abstract
As x increases in Bi4Sr3Ca3−xTmxCu4O16+y the Hall carrier density nH decreases linearly. The variation is consistent with Mott-Hubbard behavior, but in conflict with band-structure results which ignore correlations. We find that the variation of Tc vs nH is nonmonotonic. The source of the large carrier population (0.4/Cu) in the undoped (x=0) compound is discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2(Sr,Ca)3Cu2O8+d Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
| Bi4Sr3Ca3-xTmxCu4O16+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
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