Revisiting the phase diagram of T∗-type La1-x/2Eu1-x/2SrxCuO4using oxygen K-edge X-ray absorption spectroscopy

Shun Asano, Kenji Ishii, Kohei Yamagami, Jun Miyawaki, Yoshihisa Harada, Masaki Fujita

Research output: Contribution to journalArticlepeer-review

Abstract

Oxygen K-edge X-ray absorption spectroscopy measurements were conducted on T∗-type La1-x/2Eu1-x/2SrxCuO4 (LESCO) to estimate the hole density (nh) and investigate the oxidation annealing effect on nh. A drastic increase in nh due to annealing was found. The increase in nh cannot be explained solely by the oxygen gain due to annealing, suggesting that delocalized holes are introduced into the CuO2 plane. A phase diagram of LESCO was redrawn against nh.

Original languageEnglish
Article number075002
Journaljournal of the physical society of japan
Volume89
Issue number7
DOIs
Publication statusPublished - 2020 Jul

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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