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Inelastic neutron scattering study of the resonance mode in the optimally doped pnictide superconductor LaFeAsO$$_{0.92}$$F$$_{0.08}$$

Shamoto, Shinichi; Ishikado, Motoyuki; Christianson, A. D.*; Lumsden, M. D.*; Wakimoto, Shuichi; Kodama, Katsuaki; Iyo, Akira*; Arai, Masatoshi

An optimally doped iron-based superconductor LaFeAsO$$_{0.92}$$F$$_{0.08}$$ with T$$_{c}$$=29 K has been studied by inelastic powder neutron scattering. The magnetic excitation at Q = 1.15 $$AA $$$$^{-1}$$ is enhanced below T$$_{c}$$, leading to a peak at E$$_{res}$$=13 meV as the resonance mode.



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Category:Materials Science, Multidisciplinary



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