Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Magnetospectroscopy of excited states in charge-tunable GaAs/AlGaAs [111] quantum dots. / Durnev, M. V.; Vidal, M.; Bouet, L.; Amand, T.; Glazov, M. M.; Ivchenko, E. L.; Zhou, P.; Wang, G.; Mano, T.; Ha, N.; Kuroda, T.; Marie, X.; Sakoda, K.; Urbaszek, B.
в: Physical Review B, Том 93, № 24, 245412, 15.06.2016.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Magnetospectroscopy of excited states in charge-tunable GaAs/AlGaAs [111] quantum dots
AU - Durnev, M. V.
AU - Vidal, M.
AU - Bouet, L.
AU - Amand, T.
AU - Glazov, M. M.
AU - Ivchenko, E. L.
AU - Zhou, P.
AU - Wang, G.
AU - Mano, T.
AU - Ha, N.
AU - Kuroda, T.
AU - Marie, X.
AU - Sakoda, K.
AU - Urbaszek, B.
PY - 2016/6/15
Y1 - 2016/6/15
N2 - We present a combined experimental and theoretical study of highly charged and excited electron-hole complexes in strain-free (111) GaAs/AlGaAs quantum dots grown by droplet epitaxy. We address the complexes with one of the charge carriers residing in the excited state, namely, the "hot" trions X-∗ and X+∗, and the doubly negatively charged exciton X2-. Our magnetophotoluminescence experiments performed on single quantum dots in the Faraday geometry uncover characteristic emission patterns for each excited electron-hole complex, which are very different from the photoluminescence spectra observed in (001)-grown quantum dots. We present a detailed theory of the fine structure and magnetophotoluminescence spectra of X-∗,X+∗, and X2- complexes, governed by the interplay between the electron-hole Coulomb exchange interaction and the heavy-hole mixing, characteristic for these quantum dots with a trigonal symmetry. Comparison between experiment and theory allows for precise charge state identification, as well as extraction of electron-hole exchange interaction constants and g factors for the charge carriers occupying excited states.
AB - We present a combined experimental and theoretical study of highly charged and excited electron-hole complexes in strain-free (111) GaAs/AlGaAs quantum dots grown by droplet epitaxy. We address the complexes with one of the charge carriers residing in the excited state, namely, the "hot" trions X-∗ and X+∗, and the doubly negatively charged exciton X2-. Our magnetophotoluminescence experiments performed on single quantum dots in the Faraday geometry uncover characteristic emission patterns for each excited electron-hole complex, which are very different from the photoluminescence spectra observed in (001)-grown quantum dots. We present a detailed theory of the fine structure and magnetophotoluminescence spectra of X-∗,X+∗, and X2- complexes, governed by the interplay between the electron-hole Coulomb exchange interaction and the heavy-hole mixing, characteristic for these quantum dots with a trigonal symmetry. Comparison between experiment and theory allows for precise charge state identification, as well as extraction of electron-hole exchange interaction constants and g factors for the charge carriers occupying excited states.
UR - http://www.scopus.com/inward/record.url?scp=84976871293&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.93.245412
DO - 10.1103/PhysRevB.93.245412
M3 - Article
AN - SCOPUS:84976871293
VL - 93
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 24
M1 - 245412
ER -
ID: 36327495