Angle-resolved photoemission spectroscopy observation of anomalous electronic states in EuFe2As2-xPx
文献类型：期刊论文
| 作者 | Richard, P ; Capan, C ; Ma, J ; Zhang, P ; Xu, N ; Tian, T ; Denlinger, JD ; Chen, GF ; Sefat, AS ; Fisk, Z ; Ding, H |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2014 |
| 卷号 | 26期号:3 |
| 关键词 | Fe-based superconductors ARPES EuFe2P2 electronic structure |
| ISSN号 | 0953-8984 |
| 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 used angle-resolved photoemission spectroscopy to investigate the electronic structure and the Fermi surface of EuFe2As2, EuFe2As1.4P0.6 and EuFe2P2. We observed doubled core level peaks associated with the pnictide atoms. Using K atoms evaporated at the surface to affect the surface quality, we show that one component of these doubled peaks is related to a surface state. Nevertheless, strong electronic dispersion along the c-axis, especially pronounced in EuFe2P2, is observed for at least one band, thus indicating that the Fe states, albeit probably affected at the surface, do not form pure two-dimensional surface states. We determine the evolution of the Fermi surface as a function of the P content and reveal that the hole Fermi surface pockets enlarge with increasing P content. We also show that the spectral weight near the Fermi level of EuFe2P2 is reduced as compared to that of EuFe2As2 and EuFe2As1.4P0.6. Finally, we identify the electronic states associated with the Eu2+ f states and show an anomalous jump in EuFe2P2. |
| 资助信息 | CAS [2010Y1JB6]; MOST [2010CB923000, 2011CBA001000, 2011CBA00102, 2012CB821403, 2013CB921703]; NSFC, China [11004232, 11034011/A0402, 11274362]; University of Wisconsin-Madison; University of Wisconsin-Milwaukee; Office of Science, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02-05CH112]; Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59275]  |
| 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 | Richard, P,Capan, C,Ma, J,et al. Angle-resolved photoemission spectroscopy observation of anomalous electronic states in EuFe2As2-xPx[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2014,26(3). |
| APA | Richard, P.,Capan, C.,Ma, J.,Zhang, P.,Xu, N.,...&Ding, H.(2014).Angle-resolved photoemission spectroscopy observation of anomalous electronic states in EuFe2As2-xPx.JOURNAL OF PHYSICS-CONDENSED MATTER,26(3). |
| MLA | Richard, P,et al."Angle-resolved photoemission spectroscopy observation of anomalous electronic states in EuFe2As2-xPx".JOURNAL OF PHYSICS-CONDENSED MATTER 26.3(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。