Photothermal Ionization Spectroscopy of Mercury Vacancies in HgCdTe Epitaxial Films

D. V. Kozlov, T. A. Uaman Svetikova, A. V. Ikonnikov, V. V. Rumyantsev, A. A. Razova, M. S. Zholudev, N. N. Mikhailov, S. A. Dvoretskii, V. I. Gavrilenko, S. V. Morozov

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

The terahertz photoconductivity of narrow-gap Hg1 –xCdxTe alloys that originates from shallow double acceptors formed by mercury vacancies is investigated. The discrete spectrum of these acceptors and the matrix elements of the optical transitions from the ground to the excited states are calculated within a model taking into account the contribution from the conduction band and a model central-cell potential. Excited states with low ionization energies that are formed mainly by the states of light holes and are characterized by large matrix elements of optical transitions connecting them to the ground state are found. It is shown that the observed lines in the photoconductivity spectra are caused by transitions to these states for both neutral and singly ionized acceptors, rather than transitions to the valence-band continuum states.

Язык оригиналаанглийский
Страницы (с-по)402-408
Число страниц7
ЖурналJETP Letters
Том113
Номер выпуска6
DOI
СостояниеОпубликовано - мар 2021

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ

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