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.

引用

页数：5

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