Restricted Sum Rules for Optical Absorption of Metals

概要

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A concept of a sum rule applied to the conduction electron subsystem in metals is discussed in connection with the optical conductivity and the Nozieres-Pines sum rules, with the emphasis on an essential role of the Pauli-forbidden transitions of a conduction electron to occupied core states. Obrained restricted sum rules are useful means of optical analysis for metals with strong conduction-core optical coupling, and are applied to the absorption data for alkali metals. The experimental fact that the saturated values of the effective number of electrons per atom contributing to conduction electron absorption exceed the valence is interpreted satisfactorily in terms of a contribution of the Pauli-forbidden transition to the outermost p-core state.
社団法人日本物理学会の論文
1974-12-15