A comparative study of the optical properties of TbRhGe and DyRhGe |
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| Affiliation: | 1. Institute of Metal Physics UD of RAS, S. Kovalevskoy 18, 620137 Ekaterinburg, Russia;2. Ural Federal University, Mira 19, 620002 Ekaterinburg, Russia;3. Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, India;1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, Russia;2. Djakov Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria;3. Kaishev Institute of Physical Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;4. Najakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria;1. Institute of Physical Chemistry, School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang, 524048, China;2. School of Physics Science and Technology, Lingnan Normal University, Zhanjiang, 524048, China;3. Development Center for New Materials Engineering & Technology in Universities of Guangdong, Lingnan Normal University, Zhanjiang, 524048, China;1. Helmholtz-Center Berlin for Materials and Energy (HZB), Hahn-Meitner-Platz 1, 14109 Berlin, Germany;2. BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany;3. Department of Chemistry, Humboldt-Universitaet zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany;4. CBI Swedish Cement and Concrete Research Institute, Brinellgatan 4, 504 62 Borås, Sweden;1. Department of Civil and Environmental Engineering, Hanyang University, 1271 Sa 3-dong, Sangnok-gu, Ansan-si, Gyeonggi-do 426-791, Republic of Korea;2. Department of Molecular and Life Science, Hanyang University, 1271 Sa 3-dong, Sangnok-gu, Ansan-si, Gyeonggi-do 426-791, Republic of Korea;3. Department of Chemical Engineering, Hanyang University, 1271 Sa 3-dong, Sangnok-gu, Ansan-si, Gyeonggi-do 426-791, Republic of Korea;4. Department of Chemistry, Mkwawa College, University of Dar es Salaam, Iringa, United Republic of Tanzania;1. Functional Nanomaterials Research Lab, Department of Physics, Indian Institute of Technology Roorkee, Uttarakhand 247667, India;2. Department of Physics, Indian Institute of Science, Bangalore, Karnataka 560062, India;1. School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, 111 West Chang Jiang Road, Huai''an 223001, China;2. Jiangsu Provincial Key Laboratory of Modern Measurement Technology and Intelligent System, Huai''an 223001, China |
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| 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 μm 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. |
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| Keywords: | Rare-earth alloys and compounds Intermetallics Optical properties Electronic structure |
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