Issue 32, 2023

Tuning the conductance of carbon rings with impurities and electric fields

Abstract

We explore two mechanisms to tune the electronic conductance of carbon atom rings, namely, substitutional impurities and in-plane external electric fields. First-principles calculations and a tight-binding approach are used to model the systems. Two bond configurations are studied, cumulenic and polyynic, which can be relevant depending on the number of carbon atoms in the ring. We find that both impurity substitution and electric field mechanisms allow for modifying the electronic spectrum and transport characteristics. Interestingly, cumulenic and polyynic carbon rings present a different response to these perturbations, which can also be a way to elucidate the bond nature of these structures.

Graphical abstract: Tuning the conductance of carbon rings with impurities and electric fields

Article information

Article type
Paper
Submitted
17 may 2023
Accepted
05 iyl 2023
First published
25 iyl 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 22358-22366

Tuning the conductance of carbon rings with impurities and electric fields

C. Rojas, A. León, M. Pacheco, L. Chico and P. A. Orellana, RSC Adv., 2023, 13, 22358 DOI: 10.1039/D3RA03297C

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