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

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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 languageEnglish
Article number146402
Pages (from-to)146402-1-146402-4
JournalPhysical Review Letters
Volume92
Issue number14
DOIs
Publication statusPublished - Apr 9 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Tamura, R., Takeuchi, T., Aoki, C., Takeuchi, S., Kiss, T., Yokoya, T., & Shin, S. (2004). Experimental evidence for the p-d hybridization in the Cd-Ca quasicrystal: Origin of the pseudogap. Physical Review Letters, 92(14), 146402-1-146402-4. [146402]. https://doi.org/10.1103/PhysRevLett.92.146402