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Electric field induced localization phenomena in a ladder network with superlattice configuration: Effect of backbone environment
Electric field induced localization properties of a tight-binding ladder
network in presence of backbone sites are investigated. Based on Green's
function formalism we numerically calculate two-terminal transport together
with density of states for different arrangements of atomic sites in the ladder
and its backbone. Our results lead to a possibility of getting multiple
mobility edges which essentially plays a switching action between a completely
opaque to fully or partly conducting region upon the variation of system Fermi
energy, and thus, support in fabricating mesoscopic or DNA-based switching
devices.Comment: 9 pages, 6 figure
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