Electronic State of T'-Pr$_{1.3-x}$La$_{0.7}$Ce$_x$CuO$_4$ ($x = 0.10$) Studied by Compton Scattering
| Autor: | Kawamata, Takayuki, Saito, Shin, Tsuji, Naruki, Sumura, Takuya, Adachi, Tadashi, Kato, Masatsune, Sakurai, Yoshiharu, Koike, Yoji |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of the Physical Society of Japan 91, 114707 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.7566/JPSJ.91.114707 |
| Popis: | We have performed Compton scattering measurements on as-grown and reduced single crystals of the electron-doped T'-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 [T. Adachi et al., J. Phys. Soc. Jpn. 82, 063713 (2013)]. Comment: 12 pages, 2 figures |
| Databáze: | arXiv |
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