Critical and Gaussian conductivity fluctuations in a BaFe1.9Ni0.1As2 superconductor
文献类型：期刊论文
| 作者 | Salem-Sugui, S ; Alvarenga, AD ; Rey, RI ; Mosqueira, J ; Luo, HQ ; Lu, XY |
| 刊名 | SUPERCONDUCTOR SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2013 |
| 卷号 | 26期号:12 |
| ISSN号 | 0953-2048 |
| 通讯作者 | Salem-Sugui, S (reprint author), Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, RJ, Brazil. |
| 中文摘要 | We study fluctuation conductivity in a single crystal of BaFe1.9Ni0.1As2 superconductor (T-c = 20 K) as a function of temperature and applied magnetic field. Magneto-conductivity curves, Delta sigma versus T, were analyzed in terms of -1/(d ln(Delta sigma)/dT) versus T plots, which allow us to study different fluctuation regimes and to estimate exponent values and temperature widths of each regime. The analysis of magneto-conductivity curves evidences the existence of only two fluctuation regimes, a possible critical one (of glass-like type) going from the irreversible temperature to above T-c(H), followed by Aslamazov-Larkin fluctuations in the Gaussian regime. |
| 资助信息 | CNPq (Brazil); FAPERJ (Brazil); Spanish MICINN (Spain); ERDF (Spain) [FIS2010-19807]; Xunta de Galicia (Spain) [2010/XA043, 10TMT206012PR]; NSFC Program (PR China) [11004233]; 973 project (PR China) [2011CBA00110] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56850]  |
| 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 | Salem-Sugui, S,Alvarenga, AD,Rey, RI,et al. Critical and Gaussian conductivity fluctuations in a BaFe1.9Ni0.1As2 superconductor[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2013,26(12). |
| APA | Salem-Sugui, S,Alvarenga, AD,Rey, RI,Mosqueira, J,Luo, HQ,&Lu, XY.(2013).Critical and Gaussian conductivity fluctuations in a BaFe1.9Ni0.1As2 superconductor.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,26(12). |
| MLA | Salem-Sugui, S,et al."Critical and Gaussian conductivity fluctuations in a BaFe1.9Ni0.1As2 superconductor".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 26.12(2013). |
入库方式： OAI收割
来源：物理研究所
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