Spin-doping effect on the electronic structure of Sr 1-(x+y)Lax+yTi1-xCrxO3

T. Saitoh, H. Iwasawa, K. Kurahashi, Y. Nakano, T. Katsufuji, I. Hase, K. Shimada, H. Namatame, M. Taniguchi

Research output: Contribution to journalArticle

Abstract

We have investigated spin-doping effects on the valence-band electronic structure of Sr1-(x+y)Lax+yTi1-xCr xO3 at y = 0.2 using high-resolution photoemission spectroscopy and first-principles band structure calculations. The Cr 3d photoemission spectral weight located between 2.0 and 3.5 eV increased with x, indicating that x works as a rough measure of the spin density. However, the increase in the spectral weight was actually more rapid than the band theory prediction. The near-Fermi level (EF) weight due to the Ti 3d states showed significant reduction with x. Considering that the band theory predicted nearly constant density of states near EF, this reduction of the near-EF weight should be interpreted as a manifestation of strong Ti-Cr site disorder effects.

Original languageEnglish
Pages (from-to)232-235
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume184
Issue number3-6
DOIs
Publication statusPublished - 2011 Apr 1

Keywords

  • Band structure calculations
  • Cr oxide
  • Electronic structure
  • Photoemission spectroscopy
  • Spin doping
  • Ti oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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  • Cite this

    Saitoh, T., Iwasawa, H., Kurahashi, K., Nakano, Y., Katsufuji, T., Hase, I., Shimada, K., Namatame, H., & Taniguchi, M. (2011). Spin-doping effect on the electronic structure of Sr 1-(x+y)Lax+yTi1-xCrxO3. Journal of Electron Spectroscopy and Related Phenomena, 184(3-6), 232-235. https://doi.org/10.1016/j.elspec.2011.03.004