Orbital characters of bands in the iron-based superconductor BaFe1.85Co0.15As2
Physical Review B Volume 83 Issue 5
Page 054510-1-054510-9
published_at 2011-02-22
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| File | |
| Title ( eng ) |
Orbital characters of bands in the iron-based superconductor BaFe1.85Co0.15As2
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| 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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| Source Title |
Physical Review B
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| Volume | 83 |
| Issue | 5 |
| Start Page | 054510-1 |
| End Page | 054510-9 |
| 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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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
The American Physical Society
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| Date of Issued | 2011-02-22 |
| Rights |
Copyright (c) 2011 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.83.054510
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.83.054510
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