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- W3008336613 abstract "We propose a new type of quantum pump in buckled graphene nanoribbon, adiabatically driven by a kink moving along the ribbon. From a practical point of view, pumps with moving scatterers present advantages as compared to gate-driven pumps, like enhanced charge transfer per cycle per channel. The kink geometry is simplified by truncating the spatial arrangement of carbon atoms with the classical $phi^4$ model solution, including a width renormalization following from the Su-Schrieffer-Heeger model for carbon nanostructures. We demonstrate numerically, as a proof of concept, that for moderate deformations a stationary kink at the ribbon center may block the current driven by the external voltage bias. In the absence of a bias, a moving kink leads to highly-effective pump effect, with a charge per unit cycle dependent on the gate voltage." @default.
- W3008336613 created "2020-03-06" @default.
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- W3008336613 date "2020-01-01" @default.
- W3008336613 modified "2023-09-25" @default.
- W3008336613 title "Adiabatic Quantum Pumping in Buckled Graphene Nanoribbon Driven by a Kink" @default.
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- W3008336613 doi "https://doi.org/10.5506/aphyspolbsupp.13.907" @default.
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