Electronic Structure of Protonic Conductor SrTi0.98Sc0.02O3 Probed by Soft-X-ray Spectroscopy
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概要
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The electronic structure of a protonic conductor Sc-doped SrTiO3 (SrTi0.98Sc0.02O3) 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 ($E_{\text{F}}$), respectively, in dried SrTi0.98Sc0.02O3. Their intensities are lower in H2-annealed SrTi0.98Sc0.02O3. The $E_{\text{F}}$ of H2-annealed SrTi0.98Sc0.02O3 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.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2005-01-15
著者
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Tsukamoto Takeyo
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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Shin Shik
Institute For Solid State Physics (issp) University Of Tokyo
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Yamaguchi Shu
Department Of Material Science And Engineering School Of Engineering The University Of Tokyo
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Higuchi Tohru
Department Of Applied Physics Faculty Of Science Tokyo Univ. Of Science
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Hattori Takeshi
Department Of Applied Physics Faculty Of Science Science University Of Tokyo:(present)the Institute
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