• Title/Summary/Keyword: Kondo

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Valence Band Photoemission Study of the Kondo Insulator CeNiSn

  • Kang, J.S.;Olson, C.G.;Ouki, Y.
    • Journal of Magnetics
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    • v.2 no.4
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    • pp.111-115
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    • 1997

  • The electronic structure of the Kondo insulator CeNiSn has been investigated by using photoemission spectroscopy. A satellite feature is observed in the valence band spectrum about 6 eV below the Ni 3d main peak, indicating a strong Ni 3d Coulomb correlation in CeNiSn. The Ce 4f partial spectral weight exhibits three peak structures, including one due to the 4f1\longrightarrow4f0 transition, another near EF, and the other which overlaps the Ni 3d main peak. We interpret the peak near EF as reflecting mainly the Ce 4f/Sn 5p hybridization, whereas that around the ni 3d main peak as reflecting both the Ce 4f/Ni 3d and Ce 5d/Ni 3d hybridization. Yield measurements across the 4d\longrightarrow4f threshold indicate the Ce valence to be close to 3+. The prominent Fermi edge suggests a metallic ground state in CeNiSn.

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USING ROTATIONALLY SYMMETRIC PLANES TO ESTABLISH TOPOLOGICAL FINITENESS OF MANIFOLDS

  • Eric Choi
    • Bulletin of the Korean Mathematical Society
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    • v.61 no.2
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    • pp.511-517
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    • 2024

  • Let (M, p) denote a noncompact manifold M together with arbitrary basepoint p. In [7], Kondo-Tanaka show that (M, p) can be compared with a rotationally symmetric plane Mm in such a way that if Mm satisfies certain conditions, then M is proved to be topologically finite. We substitute Kondo-Tanaka's condition of finite total curvature of Mm with a weaker condition and show that the same conclusion can be drawn. We also use our results to show that when Mm satisfies certain conditions, then M is homeomorphic to ℝn.

  • https://doi.org/10.4134/BKMS.b230203 인용 PDF

한국 측지 VLBI 관측국 건설

  • Kim, Du-Hwan;Kondo, Tetsuro;O, Hong-Jong;Lee, Sang-O;Bae, Min-Su;Lee, Yong-Gu
    • The Bulletin of The Korean Astronomical Society
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    • v.34 no.1
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    • pp.107.1-107.1
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    • 2009

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