F-doping dependence of 75As nuclear quadrupole resonance frequency in LaFeAs(O1-xFx)

S. Kitagawa, Y. Nakai, T. Iye, K. Ishida, Yoichi Kamihara, M. Hirano, H. Hosono

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

We report the F-doping dependence of 75As nuclear quadruple resonance frequency (75νQ) in the iron-oxypnictide LaFeAs(O1-xFx) (x = 0, 0.07, 0.08, 0.11 and 0.14). It was revealed that 75νQ becomes larger with increasing x up to 0.14. From point charge calculations, we found that experimental F-doping dependence of 75νQ cannot be accounted for by the effect of surrounding ions. Therefore, the on-site charge distribution at the 75As site modified by the hybridization between As-4p and Fe-3d orbitals gives dominant contribution to 75νQ in LaFeAs(O1-xFx).

Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - 2010 Dec
Externally publishedYes

Fingerprint

Nuclear quadrupole resonance
nuclear quadrupole resonance
Doping (additives)
Charge distribution
charge distribution
Iron
Ions
iron
orbitals
ions

Keywords

  • Iron pnictide
  • LaFeAsO
  • NQR
  • Superconductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

Cite this

F-doping dependence of 75As nuclear quadrupole resonance frequency in LaFeAs(O1-xFx). / Kitagawa, S.; Nakai, Y.; Iye, T.; Ishida, K.; Kamihara, Yoichi; Hirano, M.; Hosono, H.

In: Physica C: Superconductivity and its Applications, Vol. 470, No. SUPPL.1, 12.2010.

Research output: Contribution to journal › Article

Kitagawa, S, Nakai, Y, Iye, T, Ishida, K, Kamihara, Y, Hirano, M & Hosono, H 2010, 'F-doping dependence of 75As nuclear quadrupole resonance frequency in LaFeAs(O1-xFx)', Physica C: Superconductivity and its Applications, vol. 470, no. SUPPL.1. https://doi.org/10.1016/j.physc.2009.10.106
Kitagawa S, Nakai Y, Iye T, Ishida K, Kamihara Y, Hirano M et al. F-doping dependence of 75As nuclear quadrupole resonance frequency in LaFeAs(O1-xFx). Physica C: Superconductivity and its Applications. 2010 Dec;470(SUPPL.1). https://doi.org/10.1016/j.physc.2009.10.106
Kitagawa, S. ; Nakai, Y. ; Iye, T. ; Ishida, K. ; Kamihara, Yoichi ; Hirano, M. ; Hosono, H. / F-doping dependence of 75As nuclear quadrupole resonance frequency in LaFeAs(O1-xFx). In: Physica C: Superconductivity and its Applications. 2010 ; Vol. 470, No. SUPPL.1.
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AU - Kitagawa, S.

AU - Nakai, Y.

AU - Iye, T.

AU - Ishida, K.

AU - Kamihara, Yoichi

AU - Hirano, M.

AU - Hosono, H.

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N2 - We report the F-doping dependence of 75As nuclear quadruple resonance frequency (75νQ) in the iron-oxypnictide LaFeAs(O1-xFx) (x = 0, 0.07, 0.08, 0.11 and 0.14). It was revealed that 75νQ becomes larger with increasing x up to 0.14. From point charge calculations, we found that experimental F-doping dependence of 75νQ cannot be accounted for by the effect of surrounding ions. Therefore, the on-site charge distribution at the 75As site modified by the hybridization between As-4p and Fe-3d orbitals gives dominant contribution to 75νQ in LaFeAs(O1-xFx).

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