کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1554284 | 998780 | 2011 | 4 صفحه PDF | دانلود رایگان |
InGaAs Quantum Dots embedded in GaAs barriers, grown in inverted tetrahedral recesses of ∼7 μm edge, have showed interesting characteristics in terms of uniformity and spectral narrowness of the emission. In this paper we present a study on the fine structure splitting (FSS). The investigation of about 40 single quantum dots revealed two main points: (1) the values of this parameter are very similar from dot to dot, proving again the uniformity of Pyramidal QD properties, (2) there is a little chance, in the sample investigated, to find a dot with natural zero splitting, but the values found (the mean being ∼13 μeV ) should always guarantee the capability of restoring the degeneracy with some corrective technique (e.g. application of a small magnetic field).
Journal: Superlattices and Microstructures - Volume 49, Issue 3, March 2011, Pages 279–282