Lateral spatial switching of excitons using vertical electric fields in semiconductor quantum rings

Details Lateral spatial switching of excitons using vertical electric fields in semiconductor quantum rings Lateral spatial switching of excitons using vertical electric fields in semiconductor quantum rings

2010-07-22

arxiv.org/abs/1007.3975v1

Appl. Phys. Lett., 97, 173101 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 4 figures

Scientific paper

10.1063/1.3504230

We study the response of exciton complexes in semiconductor quantum rings to vertical electric fields, using path integral quantum Monte Carlo simulations. The interaction of a vertical applied field and the piezoelectric fields of the ring with strongly-correlated excitonic complexes switches excitons between two different lateral locations within the ring. This control should be observable through polarizability and dipole measurements, and, for biexcitons, an energy shift beyond the normal Stark shift.

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