Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-01-12
Phys. Rev. B 73, 094410 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
16 pages, 5 figures, 1 table
Scientific paper
10.1103/PhysRevB.73.094410
In this paper we report comprehensive experimental and theoretical investigation of magnetic and electronic properties of the intermetallic compounds Pr2Fe17 and Gd2Fe17. For the first time electronic structure of these two systems was probed by optical measurements in the spectral range of 0.22-15 micrometers. On top of that charge carriers parameters (plasma frequency and relaxation frequency) and optical conductivity s(w) were determined. Self-consistent spin-resolved bandstructure calculations within the conventional LSDA+U method were performed. Theoretical interpetation of the experimental s(w) dispersions indicates transitions between 3d and 4p states of Fe ions to be the biggest ones. Qualitatively the line shape of the theoretical optical conductivity coincides well with our experimental data. Calculated by LSDA+U method magnetic moments per formula unit are found to be in good agreement with observed experimental values of saturation magnetization.
Knyazev Yu. V.
Kuz'min Yu. I.
Lukoyanov Alexey V.
Nekrasov I. A.
~Kuchin A. G.
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