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

doi:10.1016/j.solidstatesciences.2015.03.020

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

研究成果: Article › 査読

7 被引用数 (Scopus)

抄録

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.

本文言語	English
ページ（範囲）	22-26
ページ数	5
ジャーナル	Solid State Sciences
巻	44
DOI	https://doi.org/10.1016/j.solidstatesciences.2015.03.020
出版ステータス	Published - 2015 6月 1

ASJC Scopus subject areas

化学 (全般)
材料科学（全般）
凝縮系物理学

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10.1016/j.solidstatesciences.2015.03.020

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title = "A comparative study of the optical properties of TbRhGe and DyRhGe",

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.",

keywords = "Electronic structure, Intermetallics, LSDA+U calculations, Optical properties, Rare-earth alloys and compounds",

author = "Knyazev, {Yu V.} and Lukoyanov, {A. V.} and Kuz'Min, {Yu I.} and Sachin Gupta and Suresh, {K. G.}",

note = "Funding Information: This work was supported by the Russian Foundation for Basic Research (Projects No. 13-02-00256 , 15-52-45009 , 13-02-00050 ). AVL acknowledges the support of the Dynasty Foundation . SG would like to thank IIT Bombay for RA grant. Publisher Copyright: {\textcopyright} 2015 Elsevier Masson SAS.",

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AU - Knyazev, Yu V.

AU - Lukoyanov, A. V.

AU - Kuz'Min, Yu I.

AU - Gupta, Sachin

AU - Suresh, K. G.

N1 - Funding Information: This work was supported by the Russian Foundation for Basic Research (Projects No. 13-02-00256 , 15-52-45009 , 13-02-00050 ). AVL acknowledges the support of the Dynasty Foundation . SG would like to thank IIT Bombay for RA grant. Publisher Copyright: © 2015 Elsevier Masson SAS.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - 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.

AB - 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.

KW - Electronic structure

KW - Intermetallics

KW - LSDA+U calculations

KW - Optical properties

KW - Rare-earth alloys and compounds

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JF - Solid State Sciences

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A comparative study of the optical properties of TbRhGe and DyRhGe

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