Evidence for oxygen holes due to d-p rehybridization in thermoelectric Sr1-x Rh2 O4

Y. Ishida, T. Baba, Ritsuko Eguchi, M. Matsunami, M. Taguchi, A. Chainani, Y. Senba, H. Ohashi, Y. Okamoto, H. Takagi, S. Shin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Soft-x-ray photoemission and absorption spectroscopies are employed to investigate the electronic structures of Sr1-x Rh2 O4. Similar to the layered cobaltates such as Na1-x CoO2, a valence-band satellite feature (VBS) occurs at higher binding energy to the O2p band. We find that the VBS resonates at the O1s edge. Additionally, core absorption shows clear x dependence in the O1s edge rather than in the Rh3p edge. These results indicate that the holes in the initial state mainly have O2p character presumably due to d-p rehybridizations affected by Sr2+ vacancy potentials. The resultant inhomogeneous charge texture may have impact on the thermoelectric transport properties at low x.

Original languageEnglish
Article number081103
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number8
DOIs
Publication statusPublished - Aug 12 2009
Externally publishedYes

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Valence bands
Satellites
Oxygen
oxygen
Photoelectron spectroscopy
Binding energy
Absorption spectroscopy
Transport properties
Vacancies
Electronic structure
valence
Textures
X rays
absorption spectroscopy
photoelectric emission
textures
transport properties
binding energy
electronic structure
spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Evidence for oxygen holes due to d-p rehybridization in thermoelectric Sr1-x Rh2 O4. / Ishida, Y.; Baba, T.; Eguchi, Ritsuko; Matsunami, M.; Taguchi, M.; Chainani, A.; Senba, Y.; Ohashi, H.; Okamoto, Y.; Takagi, H.; Shin, S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 8, 081103, 12.08.2009.

Research output: Contribution to journalArticle

Ishida, Y, Baba, T, Eguchi, R, Matsunami, M, Taguchi, M, Chainani, A, Senba, Y, Ohashi, H, Okamoto, Y, Takagi, H & Shin, S 2009, 'Evidence for oxygen holes due to d-p rehybridization in thermoelectric Sr1-x Rh2 O4', Physical Review B - Condensed Matter and Materials Physics, vol. 80, no. 8, 081103. https://doi.org/10.1103/PhysRevB.80.081103
Ishida, Y. ; Baba, T. ; Eguchi, Ritsuko ; Matsunami, M. ; Taguchi, M. ; Chainani, A. ; Senba, Y. ; Ohashi, H. ; Okamoto, Y. ; Takagi, H. ; Shin, S. / Evidence for oxygen holes due to d-p rehybridization in thermoelectric Sr1-x Rh2 O4. In: Physical Review B - Condensed Matter and Materials Physics. 2009 ; Vol. 80, No. 8.
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AU - Matsunami, M.

AU - Taguchi, M.

AU - Chainani, A.

AU - Senba, Y.

AU - Ohashi, H.

AU - Okamoto, Y.

AU - Takagi, H.

AU - Shin, S.

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