Determination of excitonic size with sub-nanometer precision via excitonic Aharonov-Bohm effect in type-II quantum dots

被引：12
|
作者：
Roy, B. [1 ,2 ]
Ji, H. [1 ,2 ]
Dhomkar, S. [1 ,2 ]
Cadieu, F. J. [1 ,2 ]
Peng, L. [2 ,3 ]
Moug, R. [3 ]
Tamargo, M. C. [2 ,3 ]
Kuskovsky, I. L. [1 ,2 ]
机构：
[1] CUNY Queens Coll, Dept Phys, Flushing, NY 11367 USA
[2] CUNY, Grad Ctr, New York, NY 10016 USA
[3] CUNY City Coll, Dept Chem, New York, NY 10031 USA
来源：
APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 21期
基金：
美国国家科学基金会;
关键词：
MAGNETOPHOTOLUMINESCENCE;
D O I：
10.1063/1.4721489
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A spectral analysis of the Aharonov-Bohm (AB) oscillation in magneto-photoluminescence intensity was performed for stacked type-II ZnTe/ZnSe quantum dots (QDs). Very narrow AB oscillations (similar to 0.3 T) allowed for probing of both the lateral size distribution in the stack ensemble of QDs and the size of type-II excitons as determined by the electronic orbit with sub-nanometer precision. Two sets of stacks with excitonic size of 18.2 and 17.5 nm are determined to be present in the sample. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4721489]
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页数：3
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