Probing the zero energy shell wave functions of triangular graphene quantum dots with broken sublattice symmetry using a localized impurity
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917684543750144 |
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| author | Rodrigues, Alina Wania Miravet, Daniel Lawrence, James Lu, Jiong Hawrylak, Pawel |
| author_facet | Rodrigues, Alina Wania Miravet, Daniel Lawrence, James Lu, Jiong Hawrylak, Pawel |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_02364 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing the zero energy shell wave functions of triangular graphene quantum dots with broken sublattice symmetry using a localized impurity Rodrigues, Alina Wania Miravet, Daniel Lawrence, James Lu, Jiong Hawrylak, Pawel Mesoscale and Nanoscale Physics Strongly Correlated Electrons 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. |
| title | Probing the zero energy shell wave functions of triangular graphene quantum dots with broken sublattice symmetry using a localized impurity |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2406.02364 |