Electronic structure of a V2 O4 (A=Li, Zn, and Cd) studied by x-ray photoemission spectroscopy

K. Takubo; J. Y. Son; T. Mizokawa; H. Ueda; M. Isobe; Y. Matsushita; Y. Ueda

doi:10.1103/PhysRevB.74.155103

Electronic structure of a V2 O4 (A=Li, Zn, and Cd) studied by x-ray photoemission spectroscopy

K. Takubo^*, J. Y. Son, T. Mizokawa, H. Ueda, M. Isobe, Y. Matsushita, Y. Ueda

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We have studied the electronic structure of the spinel-type V oxides LiV2 O4, ZnV2 O4, and CdV2 O4 using x-ray photoemission spectroscopy. The p - d charge-transfer energy was estimated from the valence-band spectra and the exchange interaction due to d - d transfer Tσ was found to be larger than that due to p - d transfer Tπ in these systems, consistent with the existing theoretical models. Based on the V 2p core-level spectra, we discuss the oxidation state of V ions in the surface region. Interestingly, only in ZnV2 O4 does the oxidation state of V ions strongly depend on the procedure of sample preparation.

Original language	English
Article number	155103
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	74
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.74.155103
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.74.155103

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title = "Electronic structure of a V2 O4 (A=Li, Zn, and Cd) studied by x-ray photoemission spectroscopy",

abstract = "We have studied the electronic structure of the spinel-type V oxides LiV2 O4, ZnV2 O4, and CdV2 O4 using x-ray photoemission spectroscopy. The p - d charge-transfer energy was estimated from the valence-band spectra and the exchange interaction due to d - d transfer Tσ was found to be larger than that due to p - d transfer Tπ in these systems, consistent with the existing theoretical models. Based on the V 2p core-level spectra, we discuss the oxidation state of V ions in the surface region. Interestingly, only in ZnV2 O4 does the oxidation state of V ions strongly depend on the procedure of sample preparation.",

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T1 - Electronic structure of a V2 O4 (A=Li, Zn, and Cd) studied by x-ray photoemission spectroscopy

AU - Takubo, K.

AU - Son, J. Y.

AU - Mizokawa, T.

AU - Ueda, H.

AU - Isobe, M.

AU - Matsushita, Y.

AU - Ueda, Y.

PY - 2006

Y1 - 2006

N2 - We have studied the electronic structure of the spinel-type V oxides LiV2 O4, ZnV2 O4, and CdV2 O4 using x-ray photoemission spectroscopy. The p - d charge-transfer energy was estimated from the valence-band spectra and the exchange interaction due to d - d transfer Tσ was found to be larger than that due to p - d transfer Tπ in these systems, consistent with the existing theoretical models. Based on the V 2p core-level spectra, we discuss the oxidation state of V ions in the surface region. Interestingly, only in ZnV2 O4 does the oxidation state of V ions strongly depend on the procedure of sample preparation.

AB - We have studied the electronic structure of the spinel-type V oxides LiV2 O4, ZnV2 O4, and CdV2 O4 using x-ray photoemission spectroscopy. The p - d charge-transfer energy was estimated from the valence-band spectra and the exchange interaction due to d - d transfer Tσ was found to be larger than that due to p - d transfer Tπ in these systems, consistent with the existing theoretical models. Based on the V 2p core-level spectra, we discuss the oxidation state of V ions in the surface region. Interestingly, only in ZnV2 O4 does the oxidation state of V ions strongly depend on the procedure of sample preparation.

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DO - 10.1103/PhysRevB.74.155103

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VL - 74

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IS - 15

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ER -

Electronic structure of a V2 O4 (A=Li, Zn, and Cd) studied by x-ray photoemission spectroscopy

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