2026/03/31 by Andor Che Papior, Andor Che Che Papior, Van-Truong Tran +3
Engineering · Physics and Astronomy · #Coupling (piping) #Enhanced Data Rates for GSM Evolution #Fano plane #Fano resonance #Interference (communication) #Line (geometry) #Molecular Junctions and Nanostructures #Plasmonic and Surface Plasmon Research #Quantum #Quantum and electron transport phenomena #Zigzag
paper · pdf · doi:10.1088/2053-1583/ae8558
openalex publication_date 2026/07/02 · openalex created_date 2026/07/03 · openalex updated_date 2026/08/05
Abstract Mismatched junctions formed by two C <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msub> <mml:mi/> <mml:mn>3</mml:mn> </mml:msub> </mml:mrow> </mml:math> N zigzag nanoribbons of different widths provide a useful setting for studying quantum interference effects involving edge state transport. A crucial ingredient for this interference to appear is, besides the presence of edge states, the formation of localized interface states at the mismatched interface of the junction. At the level of a tight-binding model it is shown that, by means of an external gate potential, one of the edge state energy bands can selectively be shifted into the energy range of the localized interface states. The resulting coupling between the edge and localized interface states gives rise to pronounced Fano resonances in both the density of states and the transmission spectrum with line shapes well described by the canonical Fano formula. Furthermore, it is found that the geometrical mismatch of the junction not only determines the number of resonances but also the energetic orientation of their asymmetric line shapes. These results identify mismatched C <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msub> <mml:mi/> <mml:mn>3</mml:mn> </mml:msub> </mml:mrow> </mml:math> N nanojunctions as a tunable and robust platform for engineering interference-driven transport.