Orbital characters of bands in the iron-based superconductor BaFe1.85Co0.15As2
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00031966
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.
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NDC |
Physics
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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.
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journal title |
Physical Review B
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volume | Volume 83
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issue | Issue 5
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start page | 054510-1
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end page | 054510-9
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date of issued | 2011-02-22
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publisher | The American Physical Society
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issn | 1098-0121
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ncid | |
publisher doi | |
language |
eng
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nii type |
Journal Article
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HU type |
Journal Articles
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DCMI type | text
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format | application/pdf
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text version | publisher
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rights | Copyright (c) 2011 The American Physical Society
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relation url | |
department |
Hiroshima Synchrotron Radiation Center
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