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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Towards electrical domain-wall control in polyacetylene-based electronic nanodevices
(Submitted on 23 Apr 2024)
Abstract: We theoretically propose a polymer-based nano-device consisting of a single trans-polyacetylene (tPA) molecule capacitively coupled to external voltage gates. We model the integrated device using a Su-Schrieffer-Heeger (SSH)-like Hamiltonian, and we demonstrate the emergence of localized domain walls (DWs) with quantized charges (i.e., soliton excitations) localized at the gates. Interestingly, by increasing the applied voltage, multiple discrete charges can be accumulated, which may be useful for potential technological applications. Exploiting the topological character of the solitonic excitations of tPA, this device can be considered as an organic-based quantum dot with a very large and robust quantized charge.
Submission history
From: Leandro Arancibia [view email][v1] Tue, 23 Apr 2024 17:43:46 GMT (351kb,D)
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