Autor: Piętka, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Fine Structure of Neutral Excitons in Single GaAlAs Quantum Dots
Autorzy:: Molas, M.
Gołasa, K.
Piętka, B.
Potemski, M.
Babiński, A.
Powiązania:: https://bibliotekanauki.pl/articles/1403612.pdf
Data publikacji:: 2012-12
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.55.Cr
78.67.Hc
Opis:: Optical anisotropy of neutral excitons in GaAlAs/AlAs quantum dots is investigated. Low-temperature polarization-sensitive photoluminescence measurements of single quantum dots are performed. It is found that neutral excitons (X) in the quantum dots exhibit a fine structure splitting. The fine structure splitting ranges from 10 μeV to 100 μeV and correlates with the X energy. The polarization axis of the fine structure splitting is well oriented along [110] crystallographic direction of a substrate. The orientation is attributed to the elongation of GaAlAs/AlAs quantum dots in the [110] direction of the substrate.
Źródło:: Acta Physica Polonica A; 2012, 122, 6; 988-990
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Magnetic Field Effect on the Excitation Spectrum of a Neutral Exciton in a Single Quantum Dot
Autorzy:: Molas, M.
Nicolet, A.
Piętka, B.
Babiński, A.
Potemski, M.
Powiązania:: https://bibliotekanauki.pl/articles/1375688.pdf
Data publikacji:: 2014-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.67.Hc
71.35.-y
78.55.Cr
Opis:: Excitation-energy-dependent magnetospectroscopic measurements of a single GaAlAs/AlAs quantum dot were performed. A significant effect of the excitation energy on the photoluminescence spectra is reported. The photoluminescence excitation spectroscopy has been used to investigate the excitation spectrum of a single electron-hole pair - a neutral exciton in magnetic field up to 14 T. The observed resonances exhibit diamagnetic shift characteristic of an s-shell related emission. In our opinion, the creation of excited complexes involving an excited hole and a ground electron is responsible for the process.
Źródło:: Acta Physica Polonica A; 2014, 126, 5; 1066-1068
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Control of Photon Polarization in GaAs/AlAs Single Quantum Dot Emission
Autorzy:: Suffczyński, J.
Trajnerowicz, A.
Kazimierczuk, T.
Piętka, B.
Kowalik, K.
Kossacki, P.
Golnik, A.
Nawrocki, M.
Gaj, J. A.
Wysmołek, A.
Stępniewski, R.
Potemski, M.
Thierry-Mieg, V.
Powiązania:: https://bibliotekanauki.pl/articles/2047725.pdf
Data publikacji:: 2007-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.55.Cr
78.66.Fd
78.67.Hc
78.47.+p
Opis:: We study polarization resolved correlation between photons emitted in cascaded biexciton-exciton recombination from a single quantum dot formed in type II GaAs/AlAs bilayer. Magnetic field induced transition from anisotropy controlled to the Zeeman controlled emission was demonstrated by a circular polarization correlation between the emitted photons. A simple model describing the effect allowed us to determine the anisotropic exchange splitting of the excitonic state. This method of the anisotropic exchange splitting determination can be useful in the case when other methods are not sensitive enough.
Źródło:: Acta Physica Polonica A; 2007, 112, 2; 461-466
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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