Resonant tunneling through protected quantum dots at phosphorene edges
C. J. P\'aez, D. A. Bahamon, Ana L. C. Pereira, P. A. Schulz
TL;DR
This paper theoretically explores how quantum confinement and edge coupling in phosphorene zigzag nanoribbons influence resonant tunneling and transmission spectra, revealing potential for edge state manipulation.
Contribution
It introduces a theoretical model for resonant tunneling in phosphorene nanoribbons with constrictions, highlighting the effects of edge coupling on transmission features.
Findings
Resonant tunneling peaks occur with uncoupled edges.
Edge coupling causes Fano-like and anti-resonances.
Quantum confinement affects edge state transport.
Abstract
We theoretically investigate phosphorene zigzag nanorribons as a platform for constriction engineering. In the presence of a constriction at the upper edge, quantum confinement of edge protected states reveals resonant tunnelling Breit-Wigner transmission peaks, if the upper edge is uncoupled to the lower edge. Coupling between edges in thin constrictions gives rise to Fano-like and anti-resonances in the transmission spectrum of the system.
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