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Report No.

Inelastic neutron scattering study of $$beta$$-FeSe

Shamoto, Shinichi  ; Mori, Michiyasu ; Kajimoto, Ryoichi  ; Kodama, Katsuaki  ; Ishikado, Motoyuki*; Watashige, Tatsuya*; Kasahara, Shigeru*; Nakamura, Mitsutaka  ; Shibauchi, Takasada*; Matsuda, Yuji*

Iron-based superconductor $$beta$$-FeSe has not been studied in the high energy region by inelastic neutron scattering measurement. We have studied it with the single crystals grown by chemical vapor transport method. As a result, spin-wave like dispersion, which can be fitted by two types of anisotropic exchange interactions, is observed up to 200 meV.



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