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Bulk electronic structure of optimally doped Ba(Fe1-xCox)2As2
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Utfeld, C., Laverock, J., Haynes, T. D., Dugdale, S. B., Duffy, J. A., Butchers, M. W., Taylor, J. W., Giblin, S. R., Analytis, J. G., Chu, J. -H., Fisher, I. R., Itou, M. and Sakurai, Y. (2010) Bulk electronic structure of optimally doped Ba(Fe1-xCox)2As2. Physical Review B, Vol.81 (No.6). Article no. 064509. doi:10.1103/PhysRevB.81.064509
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Official URL: http://dx.doi.org/10.1103/PhysRevB.81.064509
Abstract
We report high-resolution, bulk Compton scattering measurements unveiling the Fermi surface of an optimally doped iron-arsenide superconductor, Ba(Fe0.93Co0.07)(2)As-2. Our measurements are in agreement with first-principles calculations of the electronic structure, revealing both the X-centered electron pockets and the Gamma-centered hole pockets. Moreover, our data are consistent with the strong three dimensionality of one of these sheets that has been predicted by electronic structure calculations at the local-density-approximation-minimum As position. Complementary calculations of the noninteracting susceptibility, chi(0)(q,omega), suggest that the broad peak that develops due to interband Fermi-surface nesting, and which has motivated several theories of superconductivity in this class of material, survives the measured three dimensionality of the Fermi surface in this family.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Journal or Publication Title: | Physical Review B | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1098-0121 | ||||
| Official Date: | February 2010 | ||||
| Dates: |
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| Volume: | Vol.81 | ||||
| Number: | No.6 | ||||
| Number of Pages: | 5 | ||||
| Page Range: | Article no. 064509 | ||||
| DOI: | 10.1103/PhysRevB.81.064509 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Department of Energy, Office of Basic Energy Sciences | ||||
| Grant number: | DE-AC02-76SF00515 |
Data sourced from Thomson Reuters' Web of Knowledge
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