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ID 31966
file
creator
Zhang, Y.
Chen, F.
He, C.
Zhou, B.
Xie, B. P.
Fang, C.
Tsai, W. F.
Chen, X. H.
Hayashi, H.
Jiang, J.
Hu, J. P.
Feng, D. L.
NDC
Physics
abstract
The unconventional superconductivity in the newly discovered iron-based superconductors is intimately related to its multiband/multiorbital nature. Here we report the comprehensive orbital characters of the low-energy three-dimensional electronic structure in BaFe_<1.85>Co_<0.15>As_2 by studying the polarization and photon-energy dependence of angle-resolved photoemission data. While the distributions of the d_<xz>, d_<yz>, and d_<3z^2-r^2> orbitals agree with the prediction of density functional theory, those of the d_<xy> and d_<x^2-y^2> orbitals show remarkable disagreement with theory. Our results point out the inadequacy of the existing band structure calculations and, more importantly, provide a foundation for constructing the correct microscopic model of iron pnictides.
journal title
Physical Review B
volume
Volume 83
issue
Issue 5
start page
054510-1
end page
054510-9
date of issued
2011-02-22
publisher
The American Physical Society
issn
1098-0121
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2011 The American Physical Society
relation url
department
Hiroshima Synchrotron Radiation Center



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