Experimental investigation of the origin of the crossover temperature in cuprate superconductors via dc magnetic susceptibility
Yuval Lubashevsky, Amit Keren
DOI 10.1103/PhysRevB.78.020505 · Physical Review B
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Abstract
We investigate the crossover temperature T∗ as a function of doping in (CaxLa1−x)(Ba1.75−xLa0.25+x)Cu3Oy, where the maximum Tc (Tcmax) varies continuously by 30% between families (x) with minimal structural changes. T∗ is determined by dc-susceptibility measurements. We find that T∗ scales with the maximum Néel temperature TNmax of each family. This result strongly supports a magnetic origin of T∗ and indicates that three dimensional interactions play a role in its magnitude.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+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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