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Phys Rev Lett. 2010 Feb 26;104(8):086401. Epub 2010 Feb 22.

Aharonov-Bohm interference in neutral excitons: effects of built-in electric fields.

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Departamento de Física, Universidade Federal de São Carlos, 13565-905, São Carlos, São Paulo, Brazil.


We report a comprehensive discussion of quantum interference effects due to the finite structure of neutral excitons in quantum rings and their first experimental corroboration observed in the optical recombinations. The signatures of built-in electric fields and temperature on quantum interference are demonstrated by theoretical models that describe the modulation of the interference pattern and confirmed by complementary experimental procedures.

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