Time-dependent screening of a positive charge distribution in metals: Excitons on an ultra-short time scale

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Schöne, Wolf-Dieter; Ekardt, Walter;

Experiments determining the lifetime of excited electrons in crystalline copper reveal states which cannot be interpreted as Bloch states [S. Ogawa {\it et al.}, Phys. Rev. B {\bf 55}, 10869 (1997)]. In this article we propose a model which explains these states as tran... View more
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