Electronic structure of B 2pσ and pπ states in MgB2, AlB2, and ZrB2 single crystals

Jin Nakamura; Shin ya Nasubida; Eiki Kabasawa; Hisashi Yamazaki; Nobuyoshi Yamada; Kazuhiko Kuroki; Masamitsu Watanabe; Tamio Oguchi; Sergey Lee; Ayako Yamamoto; Setsuko Tajima; Yuji Umeda; Shin Minakawa; Noriaki Kimura; Haruyoshi Aoki; Shigeki Otani; Shik Shin; Thomas A. Callcott; David L. Ederer; Jonathan D. Denlinger; Rupert C.C. Perera

doi:10.1103/PhysRevB.68.064515

Electronic structure of B 2pσ and pπ states in MgB₂, AlB₂, and ZrB₂ single crystals

Jin Nakamura, Shin ya Nasubida, Eiki Kabasawa, Hisashi Yamazaki, Nobuyoshi Yamada, Kazuhiko Kuroki, Masamitsu Watanabe, Tamio Oguchi, Sergey Lee, Ayako Yamamoto, Setsuko Tajima, Yuji Umeda, Shin Minakawa, Noriaki Kimura, Haruyoshi Aoki, Shigeki Otani, Shik Shin, Thomas A. Callcott, David L. Ederer, Jonathan D. DenlingerRupert C.C. Perera

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

16 Citations (Scopus)

Abstract

The effect of electron correlation (EC) on the electronic structure in MgB₂, AlB₂, and ZrB₂, is studied by examining the partial density of states (PDOS) of B 2pσ and pπ orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOS’s cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error (∼0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	68
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.68.064515
Publication status	Published - 2003
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.68.064515

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Nakamura, J., Nasubida, S. Y., Kabasawa, E., Yamazaki, H., Yamada, N., Kuroki, K., Watanabe, M., Oguchi, T., Lee, S., Yamamoto, A., Tajima, S., Umeda, Y., Minakawa, S., Kimura, N., Aoki, H., Otani, S., Shin, S., Callcott, T. A., Ederer, D. L., ... Perera, R. C. C. (2003). Electronic structure of B 2pσ and pπ states in MgB₂, AlB₂, and ZrB₂ single crystals. Physical Review B - Condensed Matter and Materials Physics, 68(6). https://doi.org/10.1103/PhysRevB.68.064515

Nakamura, J, Nasubida, SY, Kabasawa, E, Yamazaki, H, Yamada, N, Kuroki, K, Watanabe, M, Oguchi, T, Lee, S, Yamamoto, A, Tajima, S, Umeda, Y, Minakawa, S, Kimura, N, Aoki, H, Otani, S, Shin, S, Callcott, TA, Ederer, DL, Denlinger, JD & Perera, RCC 2003, 'Electronic structure of B 2pσ and pπ states in MgB₂, AlB₂, and ZrB₂ single crystals', Physical Review B - Condensed Matter and Materials Physics, vol. 68, no. 6. https://doi.org/10.1103/PhysRevB.68.064515

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title = "Electronic structure of B 2pσ and pπ states in MgB2, AlB2, and ZrB2 single crystals",

abstract = "The effect of electron correlation (EC) on the electronic structure in MgB2, AlB2, and ZrB2, is studied by examining the partial density of states (PDOS) of B 2pσ and pπ orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOS{\textquoteright}s cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error (∼0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.",

author = "Jin Nakamura and Nasubida, {Shin ya} and Eiki Kabasawa and Hisashi Yamazaki and Nobuyoshi Yamada and Kazuhiko Kuroki and Masamitsu Watanabe and Tamio Oguchi and Sergey Lee and Ayako Yamamoto and Setsuko Tajima and Yuji Umeda and Shin Minakawa and Noriaki Kimura and Haruyoshi Aoki and Shigeki Otani and Shik Shin and Callcott, {Thomas A.} and Ederer, {David L.} and Denlinger, {Jonathan D.} and Perera, {Rupert C.C.}",

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doi = "10.1103/PhysRevB.68.064515",

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T1 - Electronic structure of B 2pσ and pπ states in MgB2, AlB2, and ZrB2 single crystals

AU - Nakamura, Jin

AU - Nasubida, Shin ya

AU - Kabasawa, Eiki

AU - Yamazaki, Hisashi

AU - Yamada, Nobuyoshi

AU - Kuroki, Kazuhiko

AU - Watanabe, Masamitsu

AU - Oguchi, Tamio

AU - Lee, Sergey

AU - Yamamoto, Ayako

AU - Tajima, Setsuko

AU - Umeda, Yuji

AU - Minakawa, Shin

AU - Kimura, Noriaki

AU - Aoki, Haruyoshi

AU - Otani, Shigeki

AU - Shin, Shik

AU - Callcott, Thomas A.

AU - Ederer, David L.

AU - Denlinger, Jonathan D.

AU - Perera, Rupert C.C.

PY - 2003

Y1 - 2003

N2 - The effect of electron correlation (EC) on the electronic structure in MgB2, AlB2, and ZrB2, is studied by examining the partial density of states (PDOS) of B 2pσ and pπ orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOS’s cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error (∼0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.

AB - The effect of electron correlation (EC) on the electronic structure in MgB2, AlB2, and ZrB2, is studied by examining the partial density of states (PDOS) of B 2pσ and pπ orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOS’s cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error (∼0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.

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JF - Physical Review B-Condensed Matter

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Electronic structure of B 2pσ and pπ states in MgB₂, AlB₂, and ZrB₂ single crystals

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