Electronic State of T¤-Pr1.3−xLa0.7CexCuO4 (x = 0.10) Studied by Compton Scattering

Takayuki Kawamata, Shin Saito, Naruki Tsuji, Takuya Sumura, Tadashi Adachi, Masatsune Kato, Yoshiharu Sakurai, Yoji Koike

研究成果: ジャーナルへの寄稿学術論文査読

抄録

We have performed Compton scattering measurements on as-grown and reduced single crystals of the electron-doped TA-cuprate Pr1.3-xLa0.7CexCuO4 (x = 0.10) to investigate the effect of reduction annealing on the electronic state. The obtained results have revealed that the numbers of electrons in the O2p orbital in the Zhang–Rice singlet band, the Cu3dx2-y2 orbital, and the Cu3d3z2-r2 orbital are increased by reduction annealing. The increase in the number of Cu3d3z2-r2 electrons suggests the existence of Cu3d3z2-r2 holes in the as-grown single crystal. This is spectroscopic evidence of local hole doping into the Cu3d3z2-r2 orbital around the excess oxygen, as suggested by transport measurements.

本文言語英語
論文番号114707
ジャーナルJournal of the Physical Society of Japan
91
11
DOI
出版ステータス出版済み - 2022 11月 15

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