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f Electron contribution to the change of electronic structure in CeRu2Si2 with temperature: a Compton scattering study
Authors:Koizumi A  Motoyama G  Kubo Y  Tanaka T  Itou M  Sakurai Y
Institution:Graduate School of Material Science, University of Hyogo, Hyogo 678-1297, Japan.
Abstract:High resolution Compton profiles have been measured in the single crystal of CeRu(2)Si(2) above and below the Kondo temperature to elucidate the change of the Ce-4f electron from localized to itinerant states. Two-dimensional electron occupation number densities projected on the first Brillouin zone, which are obtained after a series of analyses, clearly specify the difference between itinerant and localized states. The contribution of Ce-4f electrons to the electronic structure is discussed by contrast with a band calculation.
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