Quantum critical point in smo1-xfxfeas and oxygen vacancy induced by high fluorine dopant
文献类型：期刊论文
| 作者 | Cheng, Jie1,2; Chu, Shengqi2; Chu, Wangsheng1,2; Xu, Wei2; Zhou, Jing2; Zhang, Linjuan2; Zhao, Haifeng2; Liu, Ronghua3; Chen, Xianhui3; Marcelli, Augusto4,5 |
| 刊名 | Journal of synchrotron radiation
 |
| 出版日期 | 2011-09-01 |
| 卷号 | 18页码:723-727 |
| 关键词 | Smo1-xfxfeas Xanes Oxygen vacancy |
| ISSN号 | 0909-0495 |
| DOI | 10.1107/s0909049511026483 |
| 通讯作者 | Chu, wangsheng(cws@ihep.ac.cn) |
| 英文摘要 | The local lattice and electronic structure of the high-t-c superconductor smo1-xfxfeas as a function of f-doping have been investigated by sm l-3-edge x-ray absorption near-edge structure and multiple-scattering calculations. experiments performed at the l-3-edge show that the white line (wl) is very sensitive to f-doping. in the under-doped region (x <= 0.12) the wl intensity increases with doping and then it suddenly starts decreasing at x = 0.15. meanwhile, the trend of the wl linewidth versus f-doping levels is just contrary to that of the intensity. the phenomenon is almost coincident with the quantum critical point occurring in smo1-xfxfeas at x similar or equal to 0.14. in the under-doped region the increase of the intensity is related to the localization of sm-5d states, while theoretical calculations show that both the decreasing intensity and the consequent broadening of linewidth at high f-doping are associated with the content and distribution of oxygen vacancies. |
| WOS关键词 | X-RAY-ABSORPTION ; MULTIPLE-SCATTERING RESONANCES ; FINE-STRUCTURE ; 43 K ; SUPERCONDUCTIVITY ; PRESSURE ; CLUSTERS ; SPECTRA ; VALENCE ; SYSTEM |
| WOS研究方向 | Instruments & Instrumentation ; Optics ; Physics |
| WOS类目 | Instruments & Instrumentation ; Optics ; Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000294821600006 |
| 出版者 | WILEY-BLACKWELL |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176101 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Chu, Wangsheng |
| 作者单位 | 1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China 2.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 4.Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy 5.Chinese Acad Sci, Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Jie,Chu, Shengqi,Chu, Wangsheng,et al. Quantum critical point in smo1-xfxfeas and oxygen vacancy induced by high fluorine dopant[J]. Journal of synchrotron radiation,2011,18:723-727. |
| APA | Cheng, Jie.,Chu, Shengqi.,Chu, Wangsheng.,Xu, Wei.,Zhou, Jing.,...&Wu, Ziyu.(2011).Quantum critical point in smo1-xfxfeas and oxygen vacancy induced by high fluorine dopant.Journal of synchrotron radiation,18,723-727. |
| MLA | Cheng, Jie,et al."Quantum critical point in smo1-xfxfeas and oxygen vacancy induced by high fluorine dopant".Journal of synchrotron radiation 18(2011):723-727. |
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来源：高能物理研究所
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