Probing La-based nickelates with Ni 1s core-level photoelectron spectroscopy

@misc{takegami2026probing,
  title = {{Probing La-based nickelates with Ni 1$s$ core-level photoelectron spectroscopy}},
  author = {Daisuke Takegami and Naoki Ito and Koto Fujinuma and Masato Yoshimura and Grace A. Pan and Dan Ferenc Segedin and Qi Song and Hanjong Paik and Charles M. Brooks and Hanjie Guo and Alexander C. Komarek and Takanori Taniguchi and Masaki Fujita and Julia A. Mundy and Takashi Mizokawa and Liu Hao Tjeng and Berit H. Goodge and Atsushi Hariki},
  howpublished = {arXiv},
  year = {2026},
  month = jun,
  doi = {10.48550/arxiv.2606.17663},
  eprint = {2606.17663},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.17663},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Probing La-based nickelates with Ni 1s core-level photoelectron spectroscopy
AU  - Daisuke Takegami
AU  - Naoki Ito
AU  - Koto Fujinuma
AU  - Masato Yoshimura
AU  - Grace A. Pan
AU  - Dan Ferenc Segedin
AU  - Qi Song
AU  - Hanjong Paik
AU  - Charles M. Brooks
AU  - Hanjie Guo
AU  - Alexander C. Komarek
AU  - Takanori Taniguchi
AU  - Masaki Fujita
AU  - Julia A. Mundy
AU  - Takashi Mizokawa
AU  - Liu Hao Tjeng
AU  - Berit H. Goodge
AU  - Atsushi Hariki
PY  - 2026
DA  - 2026/06/16
PB  - arXiv
DO  - 10.48550/arxiv.2606.17663
UR  - https://arxiv.org/abs/2606.17663
AB  - We present a comparative Ni core level photoemission study of La_3Ni_2O_7, Nd_3Ni_2O_7, and LaNiO_3 using both the Ni 2p and the Ni 1s. We address the challenges in analyzing the widely investigated Ni 2p spectra arising from the substantial overlap in energy of the Ni 2p with the La 3d. We show that on the other hand the deep Ni 1s core level does provide a clean view on the intrinsic electronic excitations and we highlight its potential to resolve detailed differences in the electronic structure within the strongly correlated Ruddlesden-Popper series La_n+1Ni_nO_3n+1.
ER  -