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Spectroscopy of condensed matter
The influence of copper impurity on the electronic structure and optical properties of TmNi$_{5}$ compound
Yu. V. Knyazeva, A. V. Lukoyanovab, Yu. I. Kuz'mina, A. G. Kuchina, M. Vasundharac a Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Yekaterinburg, 620990, Russia
b Ural Federal University named after the First President of Russia B. N. Yeltsin, Yekaterinburg, 620002, Russia
c CSIR—National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
Abstract:
Investigations of the electronic structure and optical properties of TmNi$_{5-x}$Сu$_{x}$ ($x$ = 0, 1, 2, 3) compounds were performed. Self-consistent calculations of the band spectrum have been performed in the local electron-spin-density approximation with a correction on strong electron interactions within the LSDA + U method. Total and partial densities of electron states associated with thulium, nickel, and copper atoms have been calculated. Optical conductivity, the behavior of which is interpreted for each compound taking into account the performed calculations, has been measured by the ellipsometry method in a wide wavelength range of 0.22–16 $\mu$m. Concentration dependences of plasma and relaxation frequencies of conduction electrons have been determined.
Received: 16.01.2018
Citation:
Yu. V. Knyazev, A. V. Lukoyanov, Yu. I. Kuz'min, A. G. Kuchin, M. Vasundhara, “The influence of copper impurity on the electronic structure and optical properties of TmNi$_{5}$ compound”, Optics and Spectroscopy, 124:6 (2018), 753–757; Optics and Spectroscopy, 124:6 (2018), 784–788
Linking options:
https://www.mathnet.ru/eng/os976 https://www.mathnet.ru/eng/os/v124/i6/p753
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