Filamentary superconductivity across the phase diagram of Ba(Fe,Co)(2)As-2
文献类型：期刊论文
| 作者 | Xiao, H ; Hu, T ; He, SK ; Shen, B ; Zhang, WJ ; Xu, B ; He, KF ; Han, J ; Singh, YP ; Wen, HH ; Qiu, XG ; Panagopoulos, C ; Almasan, CC |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:6 |
| 关键词 | RESISTIVITY |
| ISSN号 | 1098-0121 |
| 通讯作者 | Xiao, H: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We show magnetotransport results on Ba(Fe1-xCox)(2)As-2 (0.0 <= x <= 0.13) single crystals. We identify the low-temperature resistance step at 23 K in the parent compound with the onset of filamentary superconductivity (FLSC), which is suppressed by an applied magnetic field in a similar manner to the suppression of bulk superconductivity (SC) in doped samples. FLSC is found to persist across the phase diagram until the long- range antiferromagnetic order is completely suppressed. Asignificant suppression of FLSC occurs for 0.02 < x < 0.04, the doping concentration where bulk SC emerges. Based on these results and the recent report of an electronic anisotropy maximum for 0.02 <= x <= 0.04 [Chu et al., Science 329, 824 (2010)], we speculate that, besides spin fluctuations, orbital fluctuations may also play an important role in the emergence of SC in iron-based superconductors. |
| 收录类别 | SCI |
| 资助信息 | NSFC [11104335, 2011CBA00107, 2012CB921302]; National Science Foundation [NSF DMR-1006606, DMR-0844115]; ICAM Branches Cost Sharing Fund from the Institute for Complex Adaptive Matter; EURYI, National Research Foundation, Singapore [MEXT-CT-2006-039047] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38189]  |
| 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 | Xiao, H,Hu, T,He, SK,et al. Filamentary superconductivity across the phase diagram of Ba(Fe,Co)(2)As-2[J]. PHYSICAL REVIEW B,2012,86(6). |
| APA | Xiao, H.,Hu, T.,He, SK.,Shen, B.,Zhang, WJ.,...&Almasan, CC.(2012).Filamentary superconductivity across the phase diagram of Ba(Fe,Co)(2)As-2.PHYSICAL REVIEW B,86(6). |
| MLA | Xiao, H,et al."Filamentary superconductivity across the phase diagram of Ba(Fe,Co)(2)As-2".PHYSICAL REVIEW B 86.6(2012). |
入库方式： OAI收割
来源：物理研究所
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