Electronic Band Structure of BaCo2As2: A Fully Doped Ferropnictide Analog with Reduced Electronic Correlations
文献类型：期刊论文
| 作者 | Xu, N ; Richard, P ; van Roekeghem, A ; Zhang, P ; Miao, H ; Zhang, WL ; Qian, T ; Ferrero, M ; Sefat, AS ; Biermann, S ; Ding, H |
| 刊名 | PHYSICAL REVIEW X
 |
| 出版日期 | 2013 |
| 卷号 | 3期号:1 |
| ISSN号 | 2160-3308 |
| 通讯作者 | Richard, P (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We report an investigation with angle-resolved photoemission spectroscopy of the Fermi surface and electronic band structure of BaCo2As2. Although its quasinesting-free Fermi surface differs drastically from that of its Fe-pnictide cousins, we show that the BaCo2As2 system can be used as an approximation to the bare unoccupied band structure of the related BaFe2-xCoxAs2 and Ba1-xKxFe2As2 compounds. However, our experimental results, in agreement with dynamical-mean-field-theory calculations, indicate that electronic correlations are much less important in BaCo2As2 than in the ferropnictides. Our findings suggest that this effect is due to the increased filling of the electronic 3d shell in the presence of significant Hund's exchange coupling. DOI: 10.1103/PhysRevX.3.011006 |
| 资助信息 | CAS [2010Y1JB6]; MOST [2010CB923000, 2011CBA001000]; NSFC [11004232, 11050110422]; IDRIS/GENCI [1193]; Cai Yuanpei program; French ANR (project PNICTIDES); University of Wisconsin-Madison; University of Wisconsin-Milwaukee; U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56949]  |
| 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 | Xu, N,Richard, P,van Roekeghem, A,et al. Electronic Band Structure of BaCo2As2: A Fully Doped Ferropnictide Analog with Reduced Electronic Correlations[J]. PHYSICAL REVIEW X,2013,3(1). |
| APA | Xu, N.,Richard, P.,van Roekeghem, A.,Zhang, P.,Miao, H.,...&Ding, H.(2013).Electronic Band Structure of BaCo2As2: A Fully Doped Ferropnictide Analog with Reduced Electronic Correlations.PHYSICAL REVIEW X,3(1). |
| MLA | Xu, N,et al."Electronic Band Structure of BaCo2As2: A Fully Doped Ferropnictide Analog with Reduced Electronic Correlations".PHYSICAL REVIEW X 3.1(2013). |
入库方式： OAI收割
来源：物理研究所
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