A comparative study of the optical properties of TbRhGe and DyRhGe

Yu V. Knyazev, A. V. Lukoyanov, Yu I. Kuz'Min, Sachin Gupta, K. G. Suresh

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

In this paper, experimental and theoretical optical properties of TbRhGe and DyRhGe have been reported and compared. Our measurements by the ellipsometric method in the wavelength range 0.22-15 1/4m revealed significant differences in energy positions of the interband peaks in the spectral functions of these ternary compounds. The electronic structure of TbRhGe and DyRhGe calculated within the LSDA + U method was used to obtain theoretical optical conductivity, which is in good agreement with the experimental one. Further analysis allowed us to track changes in interband transitions related to the rare-earth 4f and rhodium 4d states, which are responsible for the observed differences in optical properties of TbRhGe and DyRhGe compounds.

Original languageEnglish
Pages (from-to)22-26
Number of pages5
JournalSolid State Sciences
Volume44
DOIs
Publication statusPublished - 1 Jun 2015
Externally publishedYes

Keywords

  • Electronic structure
  • Intermetallics
  • LSDA+U calculations
  • Optical properties
  • Rare-earth alloys and compounds

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