TY - JOUR
T1 - Electronic State of T¤-Pr1.3−xLa0.7CexCuO4 (x = 0.10) Studied by Compton Scattering
AU - Kawamata, Takayuki
AU - Saito, Shin
AU - Tsuji, Naruki
AU - Sumura, Takuya
AU - Adachi, Tadashi
AU - Kato, Masatsune
AU - Sakurai, Yoshiharu
AU - Koike, Yoji
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers 23108004, 17H02915, and 19H01841. The Compton scattering experiment was performed with the approval of JASRI (Proposal No. 2017B1222).
Funding Information:
Acknowledgment This work was supported by JSPS KAKENHI Grant Numbers 23108004, 17H02915, and 19H01841. The Compton scattering experiment was performed with the approval of JASRI (Proposal No. 2017B1222).
Publisher Copyright:
© 2022 The Physical Society of Japan.
PY - 2022/11/15
Y1 - 2022/11/15
N2 - 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.
AB - 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.
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U2 - 10.7566/JPSJ.91.114707
DO - 10.7566/JPSJ.91.114707
M3 - Article
AN - SCOPUS:85145449880
SN - 0031-9015
VL - 91
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 11
M1 - 114707
ER -