Extended Hubbard model describing small multidot arrays in bilayer graphene

DOI to cite this document:: 10.5283/epub.59018

Knothe, Angelika

; Burkard, Guido

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Date of publication of this fulltext: 02 Sep 2024 06:52

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Abstract

We set up and parametrize a Hubbard model for interacting quantum dots in bilayer graphene and study double dots as the smallest multidot system. We demonstrate the tunability of the spin and valley multiplets, Hubbard parameters, and effective exchange interaction by electrostatic gate potentials and the magnetic field. Considering both the long- and short-range Coulomb interactions, we map out ...