Magnetic susceptibility in the normal state: A tool to optimize Tc within a given superconducting oxide system
C. Allgeier, J. S. Schilling
DOI 10.1103/PhysRevB.48.9747 · Physical Review B
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Abstract
We compare the static magnetic susceptibilities of La2−xSrxCuO4, YBa2Cu3O6+y, Bi2Sr1.6La0.4CuO6+y, Bi2Sr2CaCu2O8+y, Tl2Ba2CuO6+y, Tl2Ba2CaCu2O8+y, and Tl2Ba2Ca2Cu3O10+y as a function of the oxygen content. The main results are that (1) the spin susceptibility in the normal state χs is primarily determined by the CuO2 layers, (2) the Meissner fraction increases markedly with the transition temperature Tc, and (3) for samples with the optimum value of Tc, χs correlates linearly with the calculated band-structure density of states at the Fermi energy. We also discuss how the value of the magnetic susceptibility in the normal state can be used to optimize Tc within a given compound system.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr1.6La0.4CuO6+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2Ba2CuO6+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2Ba2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2Ba2Ca2Cu3O10+y 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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