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

doi:10.1103/PhysRevB.80.081103

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 journal › Article

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 language	English
Article number	081103
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.80.081103
Publication status	Published - Aug 12 2009
Externally published	Yes

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ASJC Scopus subject areas

Condensed Matter Physics
Electronic, Optical and Magnetic Materials

Cite this

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, 80(8), [081103]. https://doi.org/10.1103/PhysRevB.80.081103

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 journal › Article

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AU - Eguchi, Ritsuko

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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10.1103/PhysRevB.80.081103