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(Color online) Schematic diagram of two semi-infinite perfect GNRs connecting to the stub structure with the width and length M (i.e., the number of the unit cell indicating by the rectangular frame). (a): ZGNRs with the width and (b): AGNRs with the width .
(Color online) (a) and (b) describe the electron transmission coefficients for ZGNRs and AGNRs, respectively. The insets in (a) and (b) show the corresponding LDOS. (c) and (d) describe vs T for ZGNRs and GNRs, respectively. The insets in (a) and (b) show the corresponding . Here the structural parameters are (), M = 3, (solid lines), 9 (dashed lines), 16 (dotted lines).
(Color online) (a) and (c) describe S and ZT vs the chemical potential at T = 300 K for ZGNRs, respectively. (b) and (d) show S and ZT vs at T = 300 K for AGNRs, respectively. For every plot, the solid curve is for the case of perfect GNRs.
(Color online) (a) and (b) show ZT vs the width for ZGNRs with , M = 5 at eV, and for AGNRs with , M = 5 at eV, respectively.
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