Oxygen 1s Core-Level Photoemission as a Tool to Investigate the Unoccupied Electronic States of Cuprates
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- Okada Kozo
- The Graduate School of Natural Science and Technology, Okayama University
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- Kotani Akio
- RIKEN Photon Factory, IMSS, High Energy Accelerator Research Organization
Bibliographic Information
- Other Title
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- Oxygen 1<i>s</i> Core-Level Photoemission as a Tool to Investigate the Unoccupied Electronic States of Cuprates
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Abstract
We theoretically show that the oxygen 1s x-ray photoelectron spectrum (O 1s XPS) directly refelcts the unoccupied part of the electronic states of strongly correlated oxides. On the basis of numerically exact diagonalization calculations performed using a finite-size cluster model, we study the electron- or hole-doping dependence of the O 1s XPS of two-dimensional copper compounds in detail. The O 1s XPS has a weak charge-transfer (CT) satellite structure, which is located at about 10 eV above the main line. In this CT final state, an O 2p valence electron ejected by the O 1s core hole potential is transferred to the conduction states. Thus, the line shape of the CT satellite reflects the upper Hubbard band for electron-doped or undoped cuprates and also the Zhang–Rice singlet band for hole-doped cuprates.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 75 (12), 123703-, 2006
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679166779008
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- NII Article ID
- 110005716672
- 210000106438
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- NII Book ID
- AA00704814
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- BIBCODE
- 2006JPSJ...75l3703O
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 8572830
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed