Systematic variation of magnetic-field penetration depth in high-Tc superconductors studied by muon-spin relaxation
Y. J. Uemura, V. J. Emery, A. R. Moodenbaugh, M. Suenaga, D. C. Johnston, A. J. Jacobson, J. T. Lewandowski, J. H. Brewer, R. F. Kiefl, S. R. Kreitzman, G. M. Luke, T. Riseman, C. E. Stronach, W. J. Kossler, J. R. Kempton, X. H. Yu, D. Opie, H. E. Schone
DOI 10.1103/PhysRevB.38.909 · Physical Review B
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Abstract
The muon-spin relaxation rate σ has been measured in the high-Tc superconductors YBa2Cu3Ox for x=6.66, 6.95, 7.0, and La1.85Sr0.15CuO4 in transverse external magnetic fields ∼1-4 kG. We find a simple relation which connects the transition temperature Tc, the magnetic-field penetration depth λL, the carrier concentration ns, and the effective mass m* as Tc∝σ∝1λL2∝nsm*. The linear dependence Tc∝nsm* suggests a high-energy scale for the coupling between superconducting carriers.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6.95 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89.9 | Pressure not reported | unknown |
| YBa2Cu3O6.66 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7.0 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91.1 | Pressure not reported | unknown |
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