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Pramana

, Volume 28, Issue 3, pp 299–310 | Cite as

Stabilization of valence fluctuations in the cerium solid by the time-dependent collision approach

  • Ratan Lal
Condensed Matter Physics
  • 29 Downloads

Abstract

The collision-generated hybridization which has been found responsible for the on-site mixing of the atomic-likef-state and the band-liked states in mixed valence solids has been studied for the cerium solid. A practical expression which depends on the lattice constant and temperature has been obtained for the collision-generated hybridization. Numerical calculations show that the valence varies continuously with lattice constant and that temperature makes the transition smoother. The collision-generated hybridization is found to be of significant strength in the intermediate valence regime; but over a wide range of the valence near 3.5 it varies rather slowly without preferring a particular valence. Factors which can assist the collision-generated hybridization in stabilizing the mixed valence phase at a particular lattice constant are discussed.

Keywords

Mixed valence intermediate valence valence fluctuations cerium solid time-dependent collision 

PACS No.

71.70 

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Copyright information

© Indian Academy of Sciences 1987

Authors and Affiliations

  • Ratan Lal
    • 1
  1. 1.Physics DepartmentRegional Engineering CollegeSilcharIndia

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