ONE-ELECTRON EXCITATIONS AND SHAKE UP SATELLITES IN CU K-EDGE X-RAY ABSORPTION NEAR EDGE STRUCTURE (XANES) OF LA2CUO4 BY FULL MULTIPLE-SCATTERING ANALYSIS IN REAL SPACE
文献类型：期刊论文
| 作者 | LI, CX ; POMPA, M ; CASTELLANO, AC ; DELLALONGA, S ; BIANCONI, A |
| 刊名 | PHYSICA C
 |
| 出版日期 | 1991 |
| 卷号 | 175期号:3-4页码:369 |
| 关键词 | TEMPERATURE SUPERCONDUCTOR LA1.85SR0.15CUO4 HIGH-TC SUPERCONDUCTIVITY NEAR-EDGE SINGLE-CRYSTAL FINE-STRUCTURE HOLE STATES SPECTROSCOPY SYMMETRY OXIDES PEROVSKITES |
| ISSN号 | 0921-4534 |
| 通讯作者 | LI, CX (reprint author), UNIV ROME LA SAPIENZA,DIPARTMENTO FIS,CONSORZIO INTERUNIV FIS MAT,RES UNIT,I-00185 ROME,ITALY. |
| 中文摘要 | The polarized Cu K-edge X-ray Absorption Near Edge Structure (XANES) of La2CuO4 has been interpreted by the multiple scattering approach. The size of the cluster of neighbouring atoms having good agreement with the XANES experimental data is determined by 45 atoms surrounding the absorbing Cu. The polarized spectra can be predicted in term of a one-electron dipole (DELTA-l = + 1) transition Cu ls --> epsilon-p, probing the unoccupied p-like (l = 1) density of states projected on a Cu site with orbital angular momentum ml = 0 in the E parallel-to z spectra, and the ml = 1 for the E perpendicular-to c spectra. Thus we show that the electronic structure of the high energy conduction bands, beyond the Cu 3d band, of La2CuO4 are well described in terms of the one-electron approximation. It is shown that XANES spectra are consistent with the contraction of the Cu-apex oxygen distance with doping. Final state effects induced by the core hole have been identified: (i) the core transitions take place in the fully relaxed potential, (ii) the satellite at 7 eV above the main K-XANES peak in both polarizations is assigned to a multielectron shake up excitation. Finally the shoulder on the rising absorption edge, present in many Cu compounds and usually assigned to a shake down multi-electron excitation, is shown to be due to a one-electron transition to a state delocalized over a large cluster. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50266]  |
| 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 | LI, CX,POMPA, M,CASTELLANO, AC,et al. ONE-ELECTRON EXCITATIONS AND SHAKE UP SATELLITES IN CU K-EDGE X-RAY ABSORPTION NEAR EDGE STRUCTURE (XANES) OF LA2CUO4 BY FULL MULTIPLE-SCATTERING ANALYSIS IN REAL SPACE[J]. PHYSICA C,1991,175(3-4):369. |
| APA | LI, CX,POMPA, M,CASTELLANO, AC,DELLALONGA, S,&BIANCONI, A.(1991).ONE-ELECTRON EXCITATIONS AND SHAKE UP SATELLITES IN CU K-EDGE X-RAY ABSORPTION NEAR EDGE STRUCTURE (XANES) OF LA2CUO4 BY FULL MULTIPLE-SCATTERING ANALYSIS IN REAL SPACE.PHYSICA C,175(3-4),369. |
| MLA | LI, CX,et al."ONE-ELECTRON EXCITATIONS AND SHAKE UP SATELLITES IN CU K-EDGE X-RAY ABSORPTION NEAR EDGE STRUCTURE (XANES) OF LA2CUO4 BY FULL MULTIPLE-SCATTERING ANALYSIS IN REAL SPACE".PHYSICA C 175.3-4(1991):369. |
入库方式： OAI收割
来源：物理研究所
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