Coherent Aharonov Bohm oscillations in type-II (ZnMn)Te quantum dots

Details Coherent Aharonov Bohm oscillations in type-II (ZnMn)Te quantum dots Coherent Aharonov Bohm oscillations in type-II (ZnMn)Te quantum dots

2008-03-17

arxiv.org/abs/0803.2537v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

submitted to PRB

Scientific paper

10.1103/PhysRevB.77.241302

The magneto-photoluminescence of type-II (ZnMn)Te quantum dots is presented. As a result of the type-II band alignment Aharonov-Bohm (AB) oscillations in the photoluminescence intensity are evident, confirming previous predictions for the suitability of this geometry to control the optical Aharonov-Bohm effect in semiconductor systems. Moreover, the system demonstrates an interesting interplay between the AB effect and the spin polarization in diluted magnetic semiconductor quantum dots. The intensity of the AB oscillations increases with both magnetic field and the degree of optical polarization, indicating the suppression of spin fluctuations improves the coherence of the system.

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