Magnetic penetration depth and flux-pinning effects in high-Tc superconductor La1.85Sr0.15CuO

G. Aeppli, E. J. Ansaldo, J. H. Brewer, R. J. Cava, R. F. Kiefl, S. R. Kreitzman, G. M. Luke, D. R. Noakes

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Abstract

We have performed muon-spin-relaxation (SR) measurements on La1.85Sr0.15CuO4 above and below its superconducting transition temperature, Tc=37 K. From transverse-field SR at 6 K, the magnetic penetration depth is 2500 A, which, together with previous thermodynamic data and the London formula, implies a carrier density of 0.3×1022 cm-3. The temperature dependence of in our sintered powder sample differs from that for an ordinary homogeneous superconductor. We also show that the longitudinal- and transverse-field SR techniques are sensitive probes of Hc1 and flux-pinning effects.

Original languageEnglish (US)
Pages (from-to)7129-7132
Number of pages4
JournalPhysical Review B
Volume35
Issue number13
DOIs
StatePublished - Jan 1 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Aeppli, G., Ansaldo, E. J., Brewer, J. H., Cava, R. J., Kiefl, R. F., Kreitzman, S. R., Luke, G. M., & Noakes, D. R. (1987). Magnetic penetration depth and flux-pinning effects in high-Tc superconductor La1.85Sr0.15CuO. Physical Review B, 35(13), 7129-7132. https://doi.org/10.1103/PhysRevB.35.7129