Knowledge Management System of Institute of Theoretical Physics, CAS
Liu, ZH; Zhao, YG; Li, Y; Jia, LL; Cai, YP; Zhou, S ; Xia, TL; Buchner, B; Borisenko, SV; Wang, SC; Liu, ZH (reprint author), Renmin Univ, Dept Phys, Beijing 100872, Peoples R China.
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| Orbital characters and electronic correlations in KCo2Se2 | |
| Source Publication | JOURNAL OF PHYSICS-CONDENSED MATTER
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| Language | 英语 |
| Keyword | Orbital Characters Electronic Correlations Kco2se2 |
| Abstract | We report a comprehensive study of the tridimensional nature and orbital characters of the low-energy electronic structure in KCo2Se2, using polarization-and photon energy-dependent angle-resolved photoemission spectroscopy. We observed one electron-like Fermi surface (FS) at the Brillouin zone (BZ) center, four electron-like FSs centered at the BZ corner, and one hole-like FS at the BZ boundary. The FSs show weak dispersion along the k(z) direction, indicating the near-two-dimensional nature of FSs in KCo2Se2. In combination with the local-density approximation calculations, we determined the orbital characters of the lowenergy electronic bands, which are mainly derived from the Co 3d orbital, mixed with part of the Se 4p states. The d(x2-y2) orbital gives a significant contribution to the band crossing the Fermi level. A band renormalization of about 1.6 is needed to capture the essential dispersive features, which suggests that electronic correlations are much weaker than that in KyFe2-xSe2. |
| 2015 | |
| Volume | 27Issue:29Pages:295501 |
| Subject Area | Physics |
| DOI | http://dx.doi.org/10.1088/0953-8984/27/29/295501 |
| Indexed By | SCI |
| Funding Organization | Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Science Foundation of China [11274381, 11004245] ; National Science Foundation of China [11274381, 11004245] ; National Science Foundation of China [11274381, 11004245] ; National Science Foundation of China [11274381, 11004245] ; National Science Foundation [DMR-0537588] ; National Science Foundation [DMR-0537588] ; National Science Foundation [DMR-0537588] ; National Science Foundation [DMR-0537588] ; [BO1912/2-2] ; [BO1912/2-2] ; [BO1912/2-2] ; [BO1912/2-2] ; [BO1912/3-1] ; [BO1912/3-1] ; [BO1912/3-1] ; [BO1912/3-1] ; [BE1749/13] ; [BE1749/13] ; [BE1749/13] ; [BE1749/13] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/20913 |
| Collection | SCI期刊论文 |
| Corresponding Author | Liu, ZH (reprint author), Renmin Univ, Dept Phys, Beijing 100872, Peoples R China. |
| Recommended Citation GB/T 7714 | Liu, ZH,Zhao, YG,Li, Y,et al. Orbital characters and electronic correlations in KCo2Se2[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2015,27(29):295501. |
| APA | Liu, ZH.,Zhao, YG.,Li, Y.,Jia, LL.,Cai, YP.,...&Liu, ZH .(2015).Orbital characters and electronic correlations in KCo2Se2.JOURNAL OF PHYSICS-CONDENSED MATTER,27(29),295501. |
| MLA | Liu, ZH,et al."Orbital characters and electronic correlations in KCo2Se2".JOURNAL OF PHYSICS-CONDENSED MATTER 27.29(2015):295501. |
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| File Name/Size | DocType | Version | Access | License | ||
| Orbital characters a（1939KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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