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періодичних видань НАН України
Copper-doping effects in electronic structure and spectral properties of SmNi₅
Репозиторій DSpace/Manakin
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Copper-doping effects in electronic structure and spectral properties of SmNi₅
Тема:
Низкотемпературная оптическая спектроскопия
Інший ID:
PACS: 71.20.–b, 71.20.Eh, 78.30.–j, 78.40.–q
Посилання:
Copper-doping effects in electronic structure and spectral properties of SmNi₅ / Yu.V. Knyazev, A.V. Lukoyanov, Yu.I. Kuz’min, A.G. Kuchin // Физика низких температур. — 2015. — Т. 41, № 12. — С. 1313–1317. — Бібліогр.: 15 назв. — англ.
Підтримка:
The research was carried out within the state assignment
of FASO of Russia (theme “Electron” No. 01201463326),
supported in part by RFBR (projects 13-02-00256 and
13-02-00050), Program of UrB RAS (project 15-8-2-4)
and the Dynasty Foundation. Some results reported in
this work were obtained using ”Uran” supercomputer of
IMM UrB RAS.
Дата:
2015
Переглядів:
709
Завантажень:
570
Анотація:
The electronic structure and optical properties of the SmNi₅₋Cux (x = 0, 1, 2) compounds are studied. The
band spectra of the studied intermetallics were calculated with LDA+U+SO method supplementing the local
density approximation with a correction for strong electron interaction on the shell of the rare-earth element. Optical
properties were studied by ellipsometry method in the wide wavelength range. It was found that the substitution
of copper for nickel leads to local changes in the optical conductivity spectra. Both the spectroscopic
measurements and theoretical calculations demonstrate the presence of a broad absorption band around 4 eV associated
with the Cu 3d → Ni 3d electron transitions and increasing with the grown of copper content. The experimental
dispersion curves of optical conductivity in the interband absorption region were interpreted using the
results of the calculations.
