Document Type

Article

Publication Date

10-1991

Journal or Book Title

Physical Review B

Volume

44

Issue

16

First Page

8526

Last Page

8528

DOI

10.1103/PhysRevB.44.8526

Abstract

The conductivity sum rule applied to LaSn3, CeSn3, LaB6, and CeB6 between 1.5 and 4.35 eV shows that there is approximately one more electron contributing to the optical conductivity of the Ce compounds than to that of the analogous La compounds. From the data and band calculations we conclude that about 0.5 Ce 4f electron per atom contributes as initial states for CeSn3 in the above energy range, and about half that number of 4f electrons serve as initial states in LaSn3. This shift of oscillator strength from higher energies for atoms to lower energies for solids is attributed to hybridization. Much of the remaining Ce-La difference is from transitions to p-like final states, which are reduced in the La compounds due to hybridization with unoccupied 4f states.

Comments

This article is from Physical Review B 44 (1991): 8526, doi:10.1103/PhysRevB.44.8526. Posted with permission.

Copyright Owner

The American Physical Society

Language

en

File Format

application/pdf

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