Journal Article
Takegami, D.; Fujinuma, K.; Nakamura, R.; Yoshimura, M.; Tsuei, K.-D.; Wang, G.; Wang, N.N.; Cheng, J.-G.; Uwatoko, Y.; Mizokawa, T.: Absence of Ni
2+/Ni
3+ charge disproportionation and possible roles of O 2p holes in La
3Ni
2O
7-δ revealed by hard x-ray photoemission spectroscopy. Physical Review B
109, 125119, pp. 1 - 5 (2024)