Electronic Structure of Protonic Conductor SrTi0.98Sc0.02O3 Probed by Soft-X-ray Spectroscopy

• Higuchi Tohru

  Department of Applied Physics, Tokyo University of Science

• Yamaguchi Shu

  Department of Materials and Science, University of Tokyo

• Shin Shik

  Institute for Solid State Physics, University of Tokyo RIKEN

• Hattori Takeshi

  Department of Applied Physics, Tokyo University of Science

• Tsukamoto Takeyo

  Department of Applied Physics, Tokyo University of Science

Bibliographic Information

Other Title

• Electronic Structure of Protonic Conductor SrTi_0.98Sc_0.02O₃ Probed by Soft-X-ray Spectroscopy

Abstract

The electronic structure of a protonic conductor Sc-doped SrTiO₃ (SrTi_0.98Sc_0.02O₃) single crystal has been studied by photoemission spectroscopy and X-ray absorption spectroscopy. The holes and acceptor level are observed at the top of the valence band and just above the Fermi level (E_F), respectively, in dried SrTi_0.98Sc_0.02O₃. Their intensities are lower in H₂-annealed SrTi_0.98Sc_0.02O₃. The E_F of H₂-annealed SrTi_0.98Sc_0.02O₃ shifts to the conduction band side by approximately 0.4 eV compared with that of a dried sample. These findings indicate that the doped hydrogen compensates the existence of the holes.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 44 (1A), 285-286, 2005

  The Japan Society of Applied Physics

Keywords

• SrTi<SUB>0.98</SUB>Sc<SUB>0.02</SUB>O<SUB>3</SUB>
• protonic conductor
• photoemission spectroscopy (PES)
• X-ray absorption spectroscopy (XAS)
• electronic structure

Details

• CRID: 1390282681242676864
• NII Article ID: 10014322449
• NII Article ID: 210000057849
• NII Article ID: 130004533168
• NII Book ID: AA10457675
• DOI: 10.1143/jjap.44.285
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.285
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.285/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed