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

作者：Roy B^*; Ji H; Dhomkar S; Cadieu F J; Peng L; Moug R; Tamargo M C; Kuskovsky I L

来源：Applied Physics Letters, 2012, 100(21): 213114.

DOI：10.1063/1.4721489

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.

• 出版日期2012-5-21