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Article Dans Une Revue Physical Review E Année : 2014

Disorder-enhanced exciton delocalization in an extended dendrimer

Résumé

The exciton dynamics in a disordered extended dendrimer is investigated numerically. Because a homogeneous dendrimer exhibits few highly degenerate energy levels, a dynamical localization arises when the exciton is initially located on the periphery. However, it is shown that the disorder lifts the degeneracy and favors a delocalization-relocalization transition. Weak disorder enhances the delocalized nature of the exciton and improves any quantum communication, whereas strong disorder prevents the exciton from propagating in accordance with the well-known Anderson theory.
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hal-01274988 , version 1 (16-03-2022)

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V. Pouthier. Disorder-enhanced exciton delocalization in an extended dendrimer. Physical Review E , 2014, 90, pp.022818. ⟨10.1103/PhysRevE.90.022818⟩. ⟨hal-01274988⟩
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