Electronic transmission in bent quantum wires

Details Electronic transmission in bent quantum wires Electronic transmission in bent quantum wires

2009-09-21

arxiv.org/abs/0909.3692v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 figures, Fig.2 replaced by the correct version

Scientific paper

Electronic transmission in bent quantum wires modeled by the tight binding Hamiltonian, and clamped between ideal, semi-infinite leads is studied. The effect of `bending' the chain is simulated by introducing a non-zero hopping between the extremities of the wire. It is seen that the proximity of the two ends gives rise to Falo line shapes in the transmission spectrum. Transmission properties for both an ordered lattice and a Fibonacci quantum wire are discussed. In the quasi-periodic Fibonacci chain, the proximity of the two ends of the chain closes all the gaps in the spectrum and the spectrum loses it's Cantor set character.

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