Comment on "Doping Driven ($\pi ,0$) Nesting and Magnetic Properties of Fe${}_{1+x}$Te Superconductors" [Phys. Rev. Lett. 103, 067001 (2009)]

Abstract

In this Comment, using Korringa-Kohn-Rostoker coherent-potential approximation method in the atomic-sphere approximation (KKR-ASA CPA) to describe the effects of disorder due to excess Fe in FeTe alloys, we show that (i) the rigid-band approximation is inadequate to describe the effects of disorder and its application leads to an incorrect description of the underlying physics, (ii) the rigid-band energy shift of ~0.76 eV for going from FeTe to Fe_{1.068}Te (or Fe_{1.063}Te), as obtained by Han and Savrasov (Phys. Rev. Lett. 103, 067001(2009)), is inconsistent with our FP-LMTO as well as the KKR-ASA results, and thus the FS of Fe_{1.063}Te shown in Fig. 3(b) of their paper is not correct.

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References in corpus (2)

• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• Doping Driven ($\pi ,0$) Nesting and Magnetic Properties of Fe${}_{1+x}$Te Superconductors

Cited by in corpus (8)

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• The magnetic and structural properties near the Lifshitz point in Fe1+xTe
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• Hidden $(\pi ,0)$ instability as an itinerant origin of bicollinear antiferromagnetism in Fe${}_{1+x}$Te
• Competing spin density wave, collinear, and helical magnetism in Fe1+xTe
• Magnetic Properties Controlled by Interstitial or Interlayer Cations in Iron Chalcogenides
• Spin-dependent conductivity of iron-based superconductors in a magnetic field
• Study of the itinerant electron magnetism of Fe-based superconductors by the proximity effect