Magnetic-field dependence of the oxygen isotope effect on the magnetic penetration depth of hole-doped cuprate superconductors
R. Khasanov, A. Shengelaya, D. Di Castro, D. G. Eshchenko, I. M. Savić, K. Conder, E. Pomjakushina, J. Karpinski, S. Kazakov, H. Keller
DOI 10.1103/PhysRevB.75.060505 · Physical Review B
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Abstract
The magnetic-field dependence of the oxygen isotope (O16∕O18) effect (OIE) on the in-plane magnetic-field penetration depth λab was studied in the hole-doped high-temperature cuprate superconductors YBa2Cu4O8, Y0.8Pr0.2Ba2Cu3O7−δ, and Y0.7Pr0.3Ba2Cu3O7−δ. It was found that the OIE on λab decreases by more than a factor of 2 with increasing magnetic field from μ0H=0.2Ttoμ0H=0.6T. This effect can be explained by the isotope dependence of the in-plane charge carrier mass mab*.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure not reported | unknown |
| Y0.8Pr0.2Ba2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | unknown |
| Y0.7Pr0.3Ba2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 45 | Pressure not reported | unknown |
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