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Independent Channel Method for Nanoribbons with Dislocation and Fano Defects
Author(s) -
Sánchez Vicenta,
Sánchez Fernando,
Wang Chumin
Publication year - 2021
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202100095
Subject(s) - fano plane , condensed matter physics , conductance , fano resonance , dislocation , renormalization , materials science , molecular physics , physics , quantum mechanics , mathematics , geometry , plasmon
In 2D materials, the dislocation is a common structural defect at finite temperatures as its appearance reduces the free energy by rising entropy, whereas many clusters of atoms or molecules, called as Fano defects, can be adsorbed on their extensive surface. Herein, the electronic transport in a long square nanoribbon with planar dislocation and Fano defects is studied within the tight‐binding formalism including nearest‐ and next‐nearest‐neighbor hopping integrals. To this purpose, a new convolution method is developed to transform the nanoribbon into a set of independent channels, where a real‐space renormalization procedure is applied. Despite the almost unaltered densities of states, the ballistic transport of periodic nanoribbons is mostly destroyed by the introduction of such structural defects, except for several energies in the case of Fano defects, and dissimilar conductance spectra are found in these two analyzed cases.