| Literature DB >> 12366013 |
D E MacLaughlin1, J E Sonier, R H Heffner, O O Bernal, Ben-Li Young, M S Rose, G D Morris, E D Bauer, T D Do, M B Maple.
Abstract
Transverse-field muon-spin rotation measurements in the vortex-lattice of the heavy-fermion (HF) superconductor PrOs4Sb12 yield a temperature dependence of the magnetic penetration depth lambda indicative of an isotropic or nearly isotropic energy gap. This is not seen to date in any other HF superconductor and is a signature of isotropic pairing symmetry, possibly related to a novel nonmagnetic "quadrupolar Kondo" HF mechanism in PrOs4Sb12. The T=0 relaxation rate sigma(s)(0)=0.91(1) micros(-1) yields an estimated magnetic penetration depth lambda(0)=3440(20) A, which is considerably shorter than in other HF superconductors.Entities:
Year: 2002 PMID： 12366013 DOI： 10.1103/PhysRevLett.89.157001
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161