• 제목/요약/키워드: 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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    • 제2권4호
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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
    • 대한수학회보
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    • 제61권2호
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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.

측지 VLBI용 다목적 Baseband Converter 설계

  • 곽영희;김두환;;;조길래;오홍종;이상오;이진우
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2007년도 한국우주과학회보 제16권2호
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    • pp.61-61
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    • 2007
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한국 측지 VLBI 관측국 건설

  • 김두환;;오홍종;이상오;배민수;이용구
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2009년도 한국우주과학회보 제18권1호
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    • pp.51.4-52
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    • 2009
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