Effect of 3d doping on the electronic structure of BaFe2As2

被引：38

作者：

McLeod, J. A. ^{[1
]}

Buling, A. ^{[2
]}

Green, R. J. ^{[1
]}

Boyko, T. D. ^{[1
]}

Skorikov, N. A. ^{[3
]}

Kurmaev, E. Z. ^{[3
]}

Neumann, M. ^{[2
]}

Finkelstein, L. D. ^{[3
]}

Ni, N. ^{[4
,5
]}

Thaler, A. ^{[4
,5
]}

Bud'ko, S. L. ^{[4
,5
]}

Canfield, P. C. ^{[4
,5
]}

Moewes, A. ^{[1
]}

机构：

[1] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada

[2] Univ Osnabruck, Dept Phys, D-49069 Osnabruck, Germany

[3] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620990, Russia

[4] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA

[5] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2012年 / 24卷 / 21期

基金：

加拿大自然科学与工程研究理事会; 俄罗斯科学基金会;

关键词：

RAY-EMISSION-SPECTRA; BEAMLINE;

D O I：

10.1088/0953-8984/24/21/215501

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The electronic structure of BaFe2As2 doped with Co, Ni and Cu has been studied by a variety of experimental and theoretical methods, but a clear picture of the dopant 3d states has not yet emerged. Herein we provide experimental evidence of the distribution of Co, Ni and Cu 3d states in the valence band. We conclude that the Co and Ni 3d states provide additional free carriers to the Fermi level, while the Cu 3d states are found at the bottom of the valence band in a localized 3d(10) shell. These findings help shed light on why superconductivity can occur in BaFe2As2 doped with Co and Ni but not Cu.

引用

页数：11

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