English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We report high-resolution, bulk Compton scattering measurements unveiling theFermi surface of an optimally-doped iron-arsenide superconductor,Ba(Fe$_{0.93}$Co$_{0.07}$)$_2$As$_2$. Our measurements are in agreement withfirst-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 thesesheets that has been predicted by electronic structure calculations at thelocal-density-approximation-minimum As position. Complementary calculations ofthe noninteracting susceptibility, $\chi_0({\bf q}, \omega)$, suggest that thebroad peak that develops due to interband Fermi-surface nesting, and which hasmotivated several theories of superconductivity in this class of material,survives the measured three dimensionality of the Fermi surface in this family.

Bulk electronic structure of optimally doped Ba(Fe$_{1-x}$Co$_{x}$)$_2$As$_2$