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 | |
| 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
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
}
TY - JOUR
T1 - Evidence for oxygen holes due to d-p rehybridization in thermoelectric Sr1-x Rh2 O4
AU - Ishida, Y.
AU - Baba, T.
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.
PY - 2009/8/12
Y1 - 2009/8/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=70349466333&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349466333&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.80.081103
DO - 10.1103/PhysRevB.80.081103
M3 - Article
AN - SCOPUS:70349466333
VL - 80
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 8
M1 - 081103
ER -