Experimental evidence for the p-d hybridization in the Cd-Ca quasicrystal: Origin of the pseudogap

R. Tamura; T. Takeuchi; C. Aoki; S. Takeuchi; T. Kiss; T. Yokoya; S. Shin

doi:10.1103/PhysRevLett.92.146402

Experimental evidence for the p-d hybridization in the Cd-Ca quasicrystal: Origin of the pseudogap

R. Tamura, T. Takeuchi, C. Aoki, S. Takeuchi, T. Kiss, T. Yokoya, S. Shin

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

23 Citations (Scopus)

Abstract

The electron structure of Cd₆Ca quasicrystal was investigated by using high-resolution ultraviolet photoemission spectroscopy (UPS) and Ca 2p-3d resonant photoemission spectroscopy (RPES). The Ca 2p-3p resonant photoemission spectroscopy demonstrates that the low-lying unoccupied 3d levels of calcium were lowered below the Fermi energy. Ca 3d-partial denstity of states (DOS) in terms of on-resonance minus off-resonance were also presented. The results from the partial d DOS shows unconventional picture that the origin of the pseudogap in the Cd-based quasicrystals (QC).

Original language	English
Article number	146402
Pages (from-to)	146402-1-146402-4
Journal	Physical Review Letters
Volume	92
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.92.146402
Publication status	Published - Apr 9 2004
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.92.146402

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title = "Experimental evidence for the p-d hybridization in the Cd-Ca quasicrystal: Origin of the pseudogap",

abstract = "The electron structure of Cd6Ca quasicrystal was investigated by using high-resolution ultraviolet photoemission spectroscopy (UPS) and Ca 2p-3d resonant photoemission spectroscopy (RPES). The Ca 2p-3p resonant photoemission spectroscopy demonstrates that the low-lying unoccupied 3d levels of calcium were lowered below the Fermi energy. Ca 3d-partial denstity of states (DOS) in terms of on-resonance minus off-resonance were also presented. The results from the partial d DOS shows unconventional picture that the origin of the pseudogap in the Cd-based quasicrystals (QC).",

author = "R. Tamura and T. Takeuchi and C. Aoki and S. Takeuchi and T. Kiss and T. Yokoya and S. Shin",

note = "Funding Information: One of the authors (R. T) thanks Dr. Y. Ishii for providing the results of his calculations and also for fruitful discussions. This work was supported by Japan Science and Technology Corporation (CREST).",

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language = "English",

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T1 - Experimental evidence for the p-d hybridization in the Cd-Ca quasicrystal

T2 - Origin of the pseudogap

AU - Tamura, R.

AU - Takeuchi, T.

AU - Aoki, C.

AU - Takeuchi, S.

AU - Kiss, T.

AU - Yokoya, T.

AU - Shin, S.

N1 - Funding Information: One of the authors (R. T) thanks Dr. Y. Ishii for providing the results of his calculations and also for fruitful discussions. This work was supported by Japan Science and Technology Corporation (CREST).

PY - 2004/4/9

Y1 - 2004/4/9

N2 - The electron structure of Cd6Ca quasicrystal was investigated by using high-resolution ultraviolet photoemission spectroscopy (UPS) and Ca 2p-3d resonant photoemission spectroscopy (RPES). The Ca 2p-3p resonant photoemission spectroscopy demonstrates that the low-lying unoccupied 3d levels of calcium were lowered below the Fermi energy. Ca 3d-partial denstity of states (DOS) in terms of on-resonance minus off-resonance were also presented. The results from the partial d DOS shows unconventional picture that the origin of the pseudogap in the Cd-based quasicrystals (QC).

AB - The electron structure of Cd6Ca quasicrystal was investigated by using high-resolution ultraviolet photoemission spectroscopy (UPS) and Ca 2p-3d resonant photoemission spectroscopy (RPES). The Ca 2p-3p resonant photoemission spectroscopy demonstrates that the low-lying unoccupied 3d levels of calcium were lowered below the Fermi energy. Ca 3d-partial denstity of states (DOS) in terms of on-resonance minus off-resonance were also presented. The results from the partial d DOS shows unconventional picture that the origin of the pseudogap in the Cd-based quasicrystals (QC).

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Experimental evidence for the p-d hybridization in the Cd-Ca quasicrystal: Origin of the pseudogap

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