Abstract：
:We study Coulomb interacting electrons confined in polygonal quantum rings. We focus on the interplay of localization at the polygon corners and Coulomb repulsion. Remarkably, the Coulomb repulsion allows the formation of in-gap states, i.e., corner-localized states of electron pairs or clusters shifted to energies that were forbidden for non-interacting electrons, but below the energies of corner-side-localized states. We specify conditions allowing optical excitation to those states.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Sitek A,Ţolea M,Niţă M,Serra L,Gudmundsson V,Manolescu Adoi
10.1038/srep40197subject
Has Abstractpub_date
2017-01-10 00:00:00pages
40197issn
2045-2322pii
srep40197journal_volume
7pub_type
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