Effective theory of monolayer TMDC double quantum dots

David, Alessandro; Burkard, Guido; Kormányos, Andor

Effective theory of monolayer TMDC double quantum dots

Dateien

David_2-13bzwi6zqpeqs4.pdfGröße: 1.36 MBDownloads: 264

Datum

2018

Open Access-Veröffentlichung

Open Access Hybrid

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

2D Materials. 2018, 5(3), 035031. eISSN 2053-1583. Available under: doi: 10.1088/2053-1583/aac17f

Zusammenfassung

Monolayer transition metal dichalcogenides (TMDCs) are promising candidates for quantum technologies, such as spin qubits in quantum dots, because they are truly two-dimensional semiconductors with a direct band gap. In this work, we analyse theoretically the behaviour of a double quantum dot (DQD) system created in the conduction band of these materials, with two electrons in the (1,1) charge configuration. Motivated by recent experimental progress, we consider several scenarios, including different spin–orbit splittings in the two dots and including the case when the valley degeneracy is lifted due to an insulating ferromagnetic substrate. Finally, we discuss in which cases it is possible to reduce the low energy subspace to the lowest Kramers pairs. We find that in this case the low energy model is formally identical to the Heisenberg exchange Hamiltonian, indicating that such Kramers pairs may serve as qubit implementations.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

DAVID, Alessandro, Guido BURKARD, Andor KORMÁNYOS, 2018. Effective theory of monolayer TMDC double quantum dots. In: 2D Materials. 2018, 5(3), 035031. eISSN 2053-1583. Available under: doi: 10.1088/2053-1583/aac17f

BibTex

@article{David2018-07-01Effec-42716,
  year={2018},
  doi={10.1088/2053-1583/aac17f},
  title={Effective theory of monolayer TMDC double quantum dots},
  number={3},
  volume={5},
  journal={2D Materials},
  author={David, Alessandro and Burkard, Guido and Kormányos, Andor},
  note={Article Number: 035031}
}

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