Effect of Disorder Induced by Heavy-Ion Irradiation on CeCoIn5 Superconductivity

被引:0
作者
J. S. Kim
D. Bedorf
G. R. Stewart
机构
[1] University of Florida,Department of Physics
[2] Universitaet Göttingen,I Physikalisches Institut
来源
Journal of Low Temperature Physics | 2009年 / 157卷
关键词
Superconductivity; Heavy fermion; Irradiation; Disorder;
D O I
暂无
中图分类号
学科分类号
摘要
We present a study of the effect of heavy-ion irradiation on a thinned single crystal of the unconventional heavy fermion superconductor CeCoIn5. Magnetic susceptibility and low-temperature specific heat results show that the superconducting transition temperature (Tc) changed only 4% with irradiation of 1×1012 ions/cm2, Energy=1 GeV, while the specific heat jump at Tc, ΔC, divided by Cn, where Cn is the normal state specific heat just above Tc, was reduced to 3.6 from ΔC/Cn=4.5 for unirradiated CeCoIn5. The increase of low-temperature magnetic susceptibility and the saturation in magnetization suggest that the defects induced by heavy-ion irradiation are magnetic in nature, as was seen in the case of neutron irradiation on the heavy fermion superconductors, UBe13 and UPt3. The non-Fermi liquid behavior of the irradiated sample, based on the temperature dependence of the low temperature magnetic susceptibility, is significantly altered.
引用
收藏
页码:29 / 35
页数:6
相关论文
共 117 条
[1]  
Petrovic C.(2001)undefined Europhys. Lett. 53 354-undefined
[2]  
Movshovich R.(2001)undefined J. Phys. Condens. Matter 13 L337-undefined
[3]  
Jaime M.(2000)undefined Phys. Rev. Lett. 84 4986-undefined
[4]  
Pagliuso P.G.(2001)undefined Phys. Rev. Lett. 86 5152-undefined
[5]  
Hundley M.F.(2001)undefined J. Phys. Soc. Jpn. 70 2248, 3187-undefined
[6]  
Sarrao J.L.(2001)undefined Phys. Rev. B 64 134524-undefined
[7]  
Fisk Z.(2002)undefined Phys. Rev. B 65 180504-undefined
[8]  
Thompson J.D.(2002)undefined J. Phys. Soc. Jpn. 71 162-undefined
[9]  
Petrovic C.(2001)undefined Phys. Rev. B 64 134526-undefined
[10]  
Pagliuso P.G.(2001)undefined Phys. Rev. B 64 180514-undefined