Photoelectron spectroscopy of LnBa2Cu3O7-δ(Ln=Y and Sm)

T. Takahashi, F. Maeda, H. Arai, H. Katayama-Yoshida, Y. Okabe, T. Suzuki, Y. Takakuwa, S. Hosoya, A. Fujimori, T. Miyahara, T. Koide, T. Shidara, M. Sato, S. Shamoto, M. Onoda

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4 Citations (Scopus)

Abstract

Photoelectron spectroscopy was performed for the high-Tc superconductors LnBa2Cu3O7-δ (Ln=Y and Sm) with synchrotron radiation (SR) of 20-140 eV as well as with the He I and Mg Kα lines. The valence band structure, the chemical states of component atoms (Cu and Sm), and the effect of the d-electron correlation were studied. Resonant photoemission with SR revealed that the electron correlation is relatively large (Udd = 5-6eV) and dominates the feature of the valence band structure.

Original languageEnglish
Pages (from-to)476-479
Number of pages4
JournalPhysica B+C
Volume148
Issue number1-3
DOIs
Publication statusPublished - 1987 Dec

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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