Two-gap superconductivity in Lu2Fe3Si5: A transverse-field muon spin rotation study

被引：20
|
作者：
Biswas, P. K. [1 ]
Balakrishnan, G. [1 ]
Paul, D. McK. [1 ]
Lees, M. R. [1 ]
Hillier, A. D. [2 ]
机构：
[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England
来源：
PHYSICAL REVIEW B | 2011年 / 83卷 / 05期
基金：
英国工程与自然科学研究理事会;
关键词：
MAGNETIC PENETRATION DEPTH; IRON SILICIDES; HEAT;
D O I：
10.1103/PhysRevB.83.054517
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The superconducting properties of Lu2Fe3Si5 with T-c = 6.1 K have been investigated using low-temperature transverse-field muon spin rotation (mu SR) and specific-heat measurements. The magnetic penetration depth at zero temperature, lambda(0), is 353(1) nm. The temperature dependence of the magnetic penetration depth lambda(T) is consistent with a two-gap s + s-wave model. Low-temperature specific-heat measurements on the same sample also show evidence of two distinct superconducting gaps.
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收藏
页数：5
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