Koller, Sonja and Mayrhofer, L. and Grifoni, M. (2009) Graphene armchair nanoribbon single-electron transistors: The peculiar influence of end states. EPL, 88 (5): 57001. ISSN 0295-5075,
Full text not available from this repository. (Request a copy)Abstract
We present a microscopic theory for interacting graphene armchair nanoribbon quantum dots. Long-range interaction processes are responsible for Coulomb blockade and spin-charge separation. Short-range ones, arising from the underlying honeycomb lattice of graphene smear the spin-charge separation and induce exchange correlations between bulk electrons-delocalized on the ribbon-and single electrons localized at the two ends. As a consequence, entangled end-bulk states where the bulk spin is no longer a conserved quantity occur. Entanglement's signature is the occurrence of negative differential conductance effects in a fully symmetric set-up due to symmetry-forbidden transitions. Copyright (C) EPLA, 2009
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 31 Aug 2020 06:28 |
| Last Modified: | 31 Aug 2020 06:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28019 |
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