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arXiv · 2406.02364

Probing the zero energy shell wave functions of triangular graphene quantum dots with broken sublattice symmetry using a localized impurity

Alina Wania Rodrigues·Daniel Miravet·James Lawrence·Jiong Lu·Pawel Hawrylak
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Abstract

We present here a method of probing the wave functions of a degenerate shell in a triangular graphene quantum dot, triangulene, using a localized substitutional impurity. We demonstrate its applicability to the example of aza-triangulenes. Using the analytical solution for degenerate states of an all-carbon triangulene as a basis for a triangulene containing a nitrogen impurity, we predict the structure of the zero energy shell in the presence of this impurity. We show that the impurity allows probing of the wave functions of a degenerate shell on a carbon site where it is located. We confirm our predictions by a comparison with the tight-binding and ab-initio calculation as well as with experiment.

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Alina Wania Rodrigues, Daniel Miravet, James Lawrence, Jiong Lu, Pawel Hawrylak. 2024-06-04. Probing the zero energy shell wave functions of triangular graphene quantum dots with broken sublattice symmetry using a localized impurity. https://arxiv.org/abs/2406.02364

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