Optical and transport properties of SmH2 + δ ( 0.25 < δ < 0.6) films

O. Nakamura, Y. Tanaka, M. Sakai, T. Nanbo, K. Koyama, Y. Uwatoko, S. Orimo

Research output: Contribution to journalArticlepeer-review

Abstract

We have investigated the optical and electron transport properties of superstoichiometric samarium dihydride ( SmH2 + δ ) films by measuring the room-temperature reflectivity and transmittance spectra and the temperature dependence of the DC resistivity. The reflectivity shows a minima at 1-2 eV, which is possibly due to a plasma edge. The minima show a red shift as the H/Sm ratio increases. The transmittance has a maxima at about 1 eV. The line shape of the optical conductivity cannot be explained in terms of a simple single-carrier model. In the range 0.25 < δ < 0.6, the relaxation time increases as δ increases.

Original languageEnglish
Pages (from-to)1138-1139
Number of pages2
JournalPhysica B: Condensed Matter
Volume378-380
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2006 May 1

Keywords

  • Dihydride
  • Optical conductivity
  • Samarium
  • f-electron system

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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