Abstract
We have performed muon-spin-relaxation (μSR) measurements on above and below its superconducting transition temperature, =37 K. From transverse-field μSR at 6 K, the magnetic penetration depth is λ≊2500 Å, which, together with previous thermodynamic data and the London formula, implies a carrier density of 0.3× . The temperature dependence of λ in our sintered powder sample differs from that for an ordinary homogeneous superconductor. We also show that the longitudinal- and transverse-field μSR techniques are sensitive probes of and flux-pinning effects.
- Received 11 March 1987
DOI:https://doi.org/10.1103/PhysRevB.35.7129
©1987 American Physical Society