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Figure 2 | Nanoscale Research Letters

Figure 2

From: Quantum transport simulations of graphene nanoribbon devices using Dirac equation calibrated with tight-binding π-bond model

Figure 2

The total computing time for calculating a series of G 0 , 0 ( E ) for all relevant modes in - 1 ≤ E ≤ 1 eV with 0.001 eV spacing using analytic () and iterative (Δ) methods in the TBDE model for different GNR width. The iterative method takes about 40 × longer than that of analytic method. Included for comparison is the total time to calculate the corresponding surface Green's functions calculated using iterative method in the TB-π model ().

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