Document Type

Article

Publication Date

1-1-1981

Publication Title

Journal of Physics C

Volume

14

Issue Number

19

First Page

L557

Last Page

L564

DOI

10.1088/0022-3719/14/19/007

Keywords

Mott, g-Ratios, Rbx(NH3)1-x, Oxidation, state, Rubidium, Compounds, XAS

Disciplines

Chemistry | Physical Chemistry

Abstract

The x-ray absorption spectra (XAS) of Rb metal, Rh,("JH,J, ,, 2H-NbSe2Rb111x and RbBr near the Rb K-edge have been used to ascertain that the oxidation state V of rubidium dissolved in ammonia and intt:rcalated in the layer compound is in the range 0 < V < I. Theobservededge shifts with temperature for semimctals are explainedin terms of the population of band states, and the ratio of the density states near the mobility edge over that calculated for a free electron model, i.e. the Mott ratio g, is ascertained using a semiempirical relation developed for the x-ray absorbance from Is levels to empty states ncar the mobility edge.

Comments

Copyright © 1981 IOP Publishing.The published version of the article can be found online at: http://dx.doi.org/10.1088/0022-3719/14/19/007.

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