[Tu-E] Poster Session

[Tu-E-15] Yb 4f-5d Coulomb Repulsion of YbCu₂Si₂ Derived from Resonant Hard X-ray Photoemission Spectroscopy

*Kojiro Mimura¹, Taku Kawabata¹, Yu Akedo¹, Kodai Abe¹, Takayuki Matsumoto¹, Ryohei Shimokasa^1,2, Akira Yasui², Masaichiro Mizumaki², Naomi Kawamura², Eiji Ikenaga³, Satoshi Tsutsui², Hitoshi Sato⁴, Takayuki Uozumi¹, Tatsuma D. Matsuda⁵, Yoshichika Ōnuki⁶ (1. Osaka Prefecture University(Japan), 2. Japan Synchrotron Radiation Research Institute(Japan), 3. Nagoya University(Japan), 4. Hiroshima University(Japan), 5. Tokyo Metropolitan University(Japan), 6. University of the Ryukyus(Japan))

キーワード：Valence fluctuation, Yb 4f-5d Coulomb repulsion, Resonant hard x-ray photoemission spectroscopy