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arXiv · 1710.08828

Topology driven g-factor tuning in type-II quantum dots

J. M. Llorens·V. Lopes-Oliveira·V. López-Richard·E. R. Cardozo de Oliveira·L. Wevior·J. M. Ulloa·M. D. Teodoro·G. E. Marques·A. García-Cristóbal·G. Quiang-Hai·B. Alén
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Abstract

We investigate how the voltage control of the exciton lateral dipole moment induces a transition from singly to doubly connected topology in type II InAs/GaAsSb quantum dots. The latter causes visible Aharonov-Bohm oscillations and a change of the exciton g-factor which are modulated by the applied bias. The results are explained in the frame of realistic $\mathbf{k}\cdot\mathbf{p}$ and effective Hamiltonian models and could open a venue for new spin quantum memories beyond the InAs/GaAs realm.

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J. M. Llorens, V. Lopes-Oliveira, V. López-Richard, E. R. Cardozo de Oliveira, L. Wevior, J. M. Ulloa, M. D. Teodoro, G. E. Marques, A. García-Cristóbal, G. Quiang-Hai, B. Alén. 2019-04-17. Topology driven g-factor tuning in type-II quantum dots. https://doi.org/10.1103/physrevapplied.11.044011

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