Critical behavior of the spin density wave transition in underdoped Ba(Fe1-xCox)(2)As-2 (x <= 0.05): As-75 NMR investigation
文献类型：期刊论文
| 作者 | Ning, FL ; Fu, M ; Torchetti, DA ; Imai, T ; Sefat, AS ; Cheng, P ; Shen, B ; Wen, HH |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 89期号:21 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Ning, FL (reprint author), Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China. |
| 中文摘要 | We investigate the nature of the SDW (spin density wave) transition in the underdoped regime of an iron-based high-T-c superconductor Ba(Fe1-xCox)(2)As-2 by As-75 NMR, with primary focus on a composition with x = 0.02 (T-SDW = 99 K). We demonstrate that critical slowing down toward the three-dimensional SDW transition sets in at the tetragonal to orthorhombic structural phase transition T-s = 105 K, suggesting strong interplay between structural distortion and spin correlations. In the critical regime between T-s and T-SDW, the dynamical structure factor of electron spins S(q,omega(n)) measured with the longitudinal NMR relaxation rate 1/T-1 exhibits a divergent behavior obeying a power law 1/T-1 proportional to Sigma S-q(q,omega(n)) similar to (T/T-SDW - 1)(-delta) with the critical exponent delta similar to 0.33. |
| 资助信息 | National Basic Research Program of China [2014CB921203, 2011CBA00103]; NSF of China [11274268]; NSERC; CIFAR; Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division; NSFC; Ministry of Science and Technology of China; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59533]  |
| 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 | Ning, FL,Fu, M,Torchetti, DA,et al. Critical behavior of the spin density wave transition in underdoped Ba(Fe1-xCox)(2)As-2 (x <= 0.05): As-75 NMR investigation[J]. PHYSICAL REVIEW B,2014,89(21). |
| APA | Ning, FL.,Fu, M.,Torchetti, DA.,Imai, T.,Sefat, AS.,...&Wen, HH.(2014).Critical behavior of the spin density wave transition in underdoped Ba(Fe1-xCox)(2)As-2 (x <= 0.05): As-75 NMR investigation.PHYSICAL REVIEW B,89(21). |
| MLA | Ning, FL,et al."Critical behavior of the spin density wave transition in underdoped Ba(Fe1-xCox)(2)As-2 (x <= 0.05): As-75 NMR investigation".PHYSICAL REVIEW B 89.21(2014). |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。