Influence of self-irradiation on the magnitude of the superfluid density in PuCoGa5 probed by muon spin rotation

被引：0
|
作者：
Ohishi, K. [1 ]
Heffner, R. H. [1 ,2 ]
Ito, T. U. [1 ,3 ]
Higemoto, W. [1 ]
Morris, G. D. [2 ,4 ]
Bauer, E. D. [2 ]
Graf, M. J. [2 ]
Zhu, J. -X. [2 ]
Morales, L. A. [2 ]
Sarrao, J. L. [2 ]
Fluss, M. J. [3 ,5 ]
MacLaughlin, D. E. [6 ]
Shu, L. [6 ]
机构：
[1] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[3] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan
[4] TRIUMF, Vancouver, BC V6T 2A3, Canada
[5] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[6] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 5-9期
关键词：
plutonium; superconductivity; f-electron; muon spin rotation;
D O I：
10.1016/j.physb.2007.10.079
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have performed muon spin rotation (mu SR) measurements in the radioactive Pu-based superconductor PuCoGa5 to study the effects of radiation damage on the superconducting properties. The same single crystals were studied 25 days (fresh) and 400 days (aged) after initial preparation. We find that the mu SR rate sigma(v), which is proportional to superfluid density rho(s), is steeply reduced in the aged sample compared with its reduction of T-c. This result is inconsistent with conventional Abrikosov-Gor'kov pair-breaking theory, but can be explained by the local suppression of the order parameter in a strong-scattering, short-coherence-length superconductor. (c) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：1013 / 1014
页数：2
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