Спектроскопія домішкових станів у сплавах Cu−Mn

The indices of refraction n and absorption χ of disordered Cu–Mn alloys with manganese concentrations of 2, 5, 10, 17.5, 25,37.5, and 50% are measured in the spectral range 0.23–2.8 μm (0.44–5.39 eV) at room temperature using the ellipsometric technique. Based on these data, the optical conductivity...

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Bibliographische Detailangaben
Datum:2022
Hauptverfasser: Stashchuk, V.S., Bondar, V.M., Polianska, O.P., Filipov, Ya.V.
Format: Artikel
Sprache:Ukrainian
English
Veröffentlicht: Publishing house "Academperiodika" 2022
Schlagworte:
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Online Zugang:https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2022099
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Назва журналу:Ukrainian Journal of Physics

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Ukrainian Journal of Physics
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Zusammenfassung:The indices of refraction n and absorption χ of disordered Cu–Mn alloys with manganese concentrations of 2, 5, 10, 17.5, 25,37.5, and 50% are measured in the spectral range 0.23–2.8 μm (0.44–5.39 eV) at room temperature using the ellipsometric technique. Based on these data, the optical conductivity σrelated to interband transitions is calculated. The collision frequency γ and the concentration of conduction electrons N are determined in the intraband absorption region. It is established that the addition of manganese results in the formation of a new impurity band in the copper electron spectrum which is located by 2.2 eV lower than the Fermi level and is split into two energy subbands due to the exchange interaction.