X-ray absorption near-edge spectra of overdoped La2-xSrxCuO4 high-Tc superconductors

被引：10

作者：

Ahmed, Towfiq ^{[1
]}

Das, Tanmoy ^{[2
]}

Kas, J. J. ^{[1
]}

Lin, Hsin ^{[2
]}

Barbiellini, B. ^{[2
]}

Vila, Fernando D. ^{[1
]}

Markiewicz, R. S. ^{[2
]}

Bansil, A. ^{[2
]}

Rehr, J. J. ^{[1
]}

机构：

[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[2] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 11期

关键词：

ELECTRONIC-STRUCTURE; GREENS-FUNCTION; STATES; ALLOYS;

D O I：

10.1103/PhysRevB.83.115117

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present results for realistic modeling of the x-ray absorption near edge structure (XANES) of the overdoped high-T-c superconductor La2-xSrxCuO4 in the hole doping range x = 0.20 - 0.30. Our computations are based on a real-space Green's function approach in which strong-correlation effects are taken into account in terms of a doping-dependent self-energy. The predicted O K-edge XANES is found to be in good accord with the corresponding experimental results in this overdoped regime. We find that the low energy spectra are dominated by the contribution of O atoms in the cuprate planes, with little contribution from apical O atoms.

引用

页数：5

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