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Magnetic excitations of Sr$$_{3}$$Ir$$_{2}$$O$$_{7}$$ observed by inelastic neutron scattering technique

非弾性中性子散乱実験によるSr$$_{3}$$Ir$$_{2}$$O$$_{7}$$の磁気励起の観測

藤田 全基*; 池内 和彦*; 梶本 亮一  ; 中村 充孝

Fujita, Masaki*; Ikeuchi, Kazuhiko*; Kajimoto, Ryoichi; Nakamura, Mitsutaka

In this short note, we report on the first inelastic neutron scattering (INS) study on high-energy magnetic excitations in Sr$$_{3}$$Ir$$_{2}$$O$$_{7}$$. We observed excitations between $$sim$$80 meV and $$sim$$180 meV. The peak position of the excitations is consistent with the dispersion of a single magnon determined by resonant inelastic X-ray scattering (RIXS) measurement. Thus, our results demonstrate the feasibility of INS for iridates, which has a large neutron absorption cross-section.

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