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(a) Example of a 4-th order GSL TM sequence. (b) The schematic profiles of the potentials and corresponding to (a).
Trace-maps for GSL TM sequences of variable order n under (a) nm, (b) , and (c) with , , and . (d), (e), and (f) are band structures for n = 8 corresponding to (a), (b), and (c), respectively. The horizontal dashed black line denotes the new Dirac point’s location, and the white areas are band gaps and the solid areas are passing bands.
(a) Dependence of transmission spectrum (at ) on different widths of barriers and wells, here solid blue line for , dashed green line for , and dotted red line for ; (b) dependence of transmission spectrum on different incident angles: (solid blue line), (dashed green), and (dotted red) with fixed lattice constants . Other parameters are and for an 8-th GSL TM sequence with total 256 layers.
Electronic band structures for (a) , (b) , and (c) ; (d) band gaps depending on the lattice constant w with fixed , here . Other parameters are the same as those in Fig. 2.
Conductance [(a) and (c)] and Fano factor [(b) and (d)] vs Fermi energy in an 8-th GSL TM sequence. Other parameters are the same as those in Fig. 2.
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