Proposal to determine the Fermi-surface topology of a doped iron-based superconductor using bulk-sensitive Fourier-transform Compton scattering

Abstract

We have carried out first-principles calculations of the Compton scattering spectra to demonstrate that the filling of the hole Fermi surface in LaO${}_{1-x}$F${}_x$FeAs produces a distinct signature in the Fourier transformed Compton spectrum when the momentum transfer vector lies along the [100] direction. We thus show how the critical concentration $x_c$, where hole Fermi surface pieces are filled up and the superconductivity mediated by antiferromagnetic spin fluctuations is expected to be suppressed, can be obtained in a bulk-sensitive manner.

4 pages, 6 figures, accepted in Physical Review B

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• LaFeAsO${}_{1-x}$F${}_x$: A low carrier density superconductor near itinerant magnetism
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Cited by in corpus (1)

• Inelastic X-ray scattering from valence electrons near absorption edges of FeTe and TiSe${}_2$