| PLUMHOF, Johannes, Vlastimil KŘÁPEK, LiJuan WANG, Andrei SCHLIWA, Dieter BIMBERG, Armando RASTELLI a Oliver SCHMIDT. Experimental investigation and modeling of the fine structure splitting of neutral excitons in strain-free GaAs/AlxGa1-xAs quantum dots. Physical Review B. USA: The American Physical Society, roč. 81, č. 12, s. 1309(R), 4 s. ISSN 1098-0121. 2010. |
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@article{878372,
author = {Plumhof, Johannes and Křápek, Vlastimil and Wang, LiJuan and Schliwa, Andrei and Bimberg, Dieter and Rastelli, Armando and Schmidt, Oliver},
article_location = {USA},
article_number = {12},
keywords = {fine structure splitting; quantum dots},
language = {eng},
issn = {1098-0121},
journal = {Physical Review B},
title = {Experimental investigation and modeling of the fine structure splitting of neutral excitons in strain-free GaAs/AlxGa1-xAs quantum dots},
url = {http://link.aps.org/doi/10.1103/PhysRevB.81.121309},
volume = {81},
year = {2010}
}
TY - JOUR
ID - 878372
AU - Plumhof, Johannes - Křápek, Vlastimil - Wang, LiJuan - Schliwa, Andrei - Bimberg, Dieter - Rastelli, Armando - Schmidt, Oliver
PY - 2010
TI - Experimental investigation and modeling of the fine structure splitting of neutral excitons in strain-free GaAs/AlxGa1-xAs quantum dots
JF - Physical Review B
VL - 81
IS - 12
SP - 1309(R)
EP - 1309(R)
PB - The American Physical Society
SN - 10980121
KW - fine structure splitting
KW - quantum dots
UR - http://link.aps.org/doi/10.1103/PhysRevB.81.121309
N2 - We measure, by photoluminescence spectroscopy, the fine structure splitting (FSS) of bright excitons confined in a large number of elongated and unstrained Al0.35Ga0.65As/GaAs/Al0.45Ga0.55As quantum dots (QDs) and quantum-well potential fluctuations (QWPFs). While the FSS values are comparable, the light polarization directions for well-oriented QDs and randomly oriented QWPFs on the same sample are substantially different. We compare the results with model calculations using as input scanning probe microscopy data of QD structures nominally identical to those investigated by photoluminescence. The model reproduces well the polarization orientation for all studied samples and also the magnitude of the FSS, at least for relatively tall dots. We discuss the results and elucidate the role of in-plane elongation on the FSS.
ER -
PLUMHOF, Johannes, Vlastimil KŘÁPEK, LiJuan WANG, Andrei SCHLIWA, Dieter BIMBERG, Armando RASTELLI a Oliver SCHMIDT. Experimental investigation and modeling of the fine structure splitting of neutral excitons in strain-free GaAs/AlxGa1-xAs quantum dots. \textit{Physical Review B}. USA: The American Physical Society, roč.~81, č.~12, s.~1309(R), 4 s. ISSN~1098-0121. 2010.
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