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

doi:10.1103/PhysRevApplied.11.044011

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

Mesoscale and Nanoscale Physics 2019-04-18 v6

Authors: 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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@article{arxiv.1710.08828,
  title  = {Topology driven g-factor tuning in type-II quantum dots},
  author = {J. M. Llorens and V. Lopes-Oliveira and V. López-Richard and E. R. Cardozo de Oliveira and L. Wevior and J. M. Ulloa and M. D. Teodoro and G. E. Marques and A. García-Cristóbal and G. Quiang-Hai and B. Alén},
  journal= {arXiv preprint arXiv:1710.08828},
  year   = {2019}
}

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

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