TY - JOUR
T1 - Dynamical spin susceptibility studied by inelastic neutron scattering on LaFeAsO1-xFx
AU - Shamoto, S.
AU - Ishikado, M.
AU - Wakimoto, S.
AU - Kodama, K.
AU - Kajimoto, R.
AU - Arai, M.
PY - 2012
Y1 - 2012
N2 - Low-energy spin excitations on polycrystalline LaFeAsO1-xF x samples have been studied by inelastic neutron scattering. The Q-integrated dynamical spin susceptibility χ″(ω) at 11 meV decreases with increasing fluorine content x across the phase transition from antiferromagnetic to superconducting phases. For superconducting samples, a peak in χ″(ω) develops at ω=Eres below T c, accompanied by its reduction below Eres. Fe 3d orbital contribution on the dynamical spin susceptibility and the electron scattering between Γ and M Fermi surfaces are discussed.
AB - Low-energy spin excitations on polycrystalline LaFeAsO1-xF x samples have been studied by inelastic neutron scattering. The Q-integrated dynamical spin susceptibility χ″(ω) at 11 meV decreases with increasing fluorine content x across the phase transition from antiferromagnetic to superconducting phases. For superconducting samples, a peak in χ″(ω) develops at ω=Eres below T c, accompanied by its reduction below Eres. Fe 3d orbital contribution on the dynamical spin susceptibility and the electron scattering between Γ and M Fermi surfaces are discussed.
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U2 - 10.1088/1742-6596/340/1/012075
DO - 10.1088/1742-6596/340/1/012075
M3 - Conference article
AN - SCOPUS:84858598466
VL - 340
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
M1 - 012075
T2 - 5th European Conference on Neutron Scattering, ECNS 2011
Y2 - 17 July 2011 through 21 July 2011
ER -