Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1816805 | Physica B: Condensed Matter | 2006 | 4 Pages |
Abstract
The penetration depth λ in the filled-skutterudite heavy-fermion superconductor PrOs4Sb12 has been measured using transverse-field muon spin rotation (TF-μSR). It is found to be temperature-independent at low temperatures, consistent with a nonzero gap for quasiparticle excitations. In contrast, radiofrequency (RF) measurements yield a stronger temperature dependence of λ(T), indicative of point nodes in the gap. A â¼10% discrepancy is found at low temperatures. This may be due to mechanisms that modify the vortex-state field distribution, or to the surface scattering which breaks pairs in an odd-parity superconductor. Alternatively, it may be a matter of field orientation of nodal gap structure in the μSR measurements.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
L. Shu, D.E. MacLaughlin, R.H. Heffner, F.D. Callaghan, J.E. Sonier, G.D. Morris, O.O. Bernal, A. Bosse, J.E. Anderson, W.M. Yuhasz, N.A. Frederick, M.B. Maple,