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Local structural disorder in REFeAsO oxypnictides by RE L-3 edge XANES
Xu W(徐伟); Chu WS(储旺盛); Wu ZY(吴自玉); Xu, W; Marcelli, A; Joseph, B; Iadecola, A; Chu, WS; Di Gioacchino, D; Bianconi, A; Wu, ZY; Saini, NL
2010
发表期刊JOURNAL OF PHYSICS-CONDENSED MATTER
卷号22期号:12页码:125701
通讯作者[Xu, W. ; Chu, W. S. ; Wu, Z. Y.] Chinese Acad Sci, Inst High Energy Phys, BSRF, Beijing 10049, Peoples R China ; [Marcelli, A. ; Di Gioacchino, D.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy ; [Joseph, B. ; Iadecola, A. ; Bianconi, A. ; Saini, N. L.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy ; [Wu, Z. Y.] Univ Sci & Technol China, NSRL, Hefei 230026, Peoples R China
文章类型Article
摘要The REFeAsO (RE = La, Pr, Nd and Sm) system has been studied by RE L-3 x-ray absorption near edge structure (XANES) spectroscopy to explore the contribution of the REO spacers between the electronically active FeAs slabs in these materials. The XANES spectra have been simulated by full multiple scattering calculations to describe the different experimental features and their evolution with the RE size. The near edge feature just above the L-3 white line is found to be sensitive to the ordering/disordering of oxygen atoms in the REO layers. In addition, shape resonance peaks due to As and O scattering change systematically, indicating local structural changes in the FeAs slabs and the REO spacers due to RE size. The results suggest that interlayer coupling and oxygen order/disorder in the REO spacers may have an important role in the superconductivity and itinerant magnetism of the oxypnictides.
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1088/0953-8984/22/12/125701
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Condensed Matter
WOS记录号WOS:000275496600012
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被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240993
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Xu W,Chu WS,Wu ZY,et al. Local structural disorder in REFeAsO oxypnictides by RE L-3 edge XANES[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2010,22(12):125701.
APA 徐伟.,储旺盛.,吴自玉.,Xu, W.,Marcelli, A.,...&Saini, NL.(2010).Local structural disorder in REFeAsO oxypnictides by RE L-3 edge XANES.JOURNAL OF PHYSICS-CONDENSED MATTER,22(12),125701.
MLA 徐伟,et al."Local structural disorder in REFeAsO oxypnictides by RE L-3 edge XANES".JOURNAL OF PHYSICS-CONDENSED MATTER 22.12(2010):125701.
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