Resonant valence-band satellite in NiGa

descriptionPublicationkeyboard_double_arrow_right Article 15 Oct 1995 English Publisher:American Physical Society (APS)Journal:Physical Review B, volume 52, pages 10,858-10,864 (issn: 0163-1829, eissn: 1095-3795,

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Authors: , Hsu;

doi: 10.1103/physrevb.52.10858

pmid: 9980184

Resonant valence-band satellite in NiGa

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Abstract

Valence-band photoemission spectra of NiGa were measured with synchrotoron radiation at photon energies around the Ni 3p core excitation threshold. The valence-band satellite in NiGa is resonantly enhanced, and it has about the same Fano parameter and effective Coulomb interaction as those for elemental Ni. These observations suggest that the Ni d band in NiGa is not completely filled. The number of holes per Ni atom in the Ni d band for NiGa is estimated to be 0.33. The effective Coulomb interaction between two 3d holes on the same site is 4.6 eV off resonance and 5.3 eV on resonance.

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