Influence of carbon concentration on the superconductivity in MgCxNi3 | |
Shan, L ; Xia, K ; Liu, ZY ; Wen, HH ; Ren, ZA ; Che, GC ; Zhao, ZX | |
刊名 | PHYSICAL REVIEW B
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2003 | |
卷号 | 68期号:2 |
关键词 | TRANSITION-TEMPERATURE MGCNI3 |
ISSN号 | 1098-0121 |
通讯作者 | Shan, L: Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China. |
中文摘要 | The influence of carbon concentration on the superconductivity (SC) in MgCxNi3 has been investigated by measuring the low temperature specific heat combined with first principles electronic structure calculation. It is found that the specific heat coefficient gamma(n) = C-en/T of the superconducting sample (xapproximate to1) in normal state is twice that of the non-superconducting one (xapproximate to0.85). The comparison of measured gamma(n) and the calculated electronic density of states (DOS) shows that the effective mass renormalization changes remarkably as the carbon concentration changes. The large mass renormalization for the superconducting sample and the low transition temperature T-c(7K) indicate that more than one kind of boson mediated electron-electron interaction exists in MgCxNi3. |
收录类别 | SCI |
语种 | 英语 |
公开日期 | 2013-09-17 |
内容类型 | 期刊论文 |
源URL | [http://ir.iphy.ac.cn/handle/311004/39792] ![]() |
专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
推荐引用方式 GB/T 7714 | Shan, L,Xia, K,Liu, ZY,et al. Influence of carbon concentration on the superconductivity in MgCxNi3[J]. PHYSICAL REVIEW B,2003,68(2). |
APA | Shan, L.,Xia, K.,Liu, ZY.,Wen, HH.,Ren, ZA.,...&Zhao, ZX.(2003).Influence of carbon concentration on the superconductivity in MgCxNi3.PHYSICAL REVIEW B,68(2). |
MLA | Shan, L,et al."Influence of carbon concentration on the superconductivity in MgCxNi3".PHYSICAL REVIEW B 68.2(2003). |
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