Quantum interference effects in particle transport through square lattices

Details Quantum interference effects in particle transport through square lattices Quantum interference effects in particle transport through square lattices

2004-06-26

arxiv.org/abs/cond-mat/0406660v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 6 figures, submitted to Phys. Rev. E

Scientific paper

10.1103/PhysRevE.70.066142

We study the transport of a quantum particle through square lattices of various sizes by employing the tight-binding Hamiltonian from quantum percolation. Input and output semi-infinite chains are attached to the lattice either by diagonal point to point contacts or by a busbar connection. We find resonant transmission and reflection occuring whenever the incident particle's energy is near an eigenvalue of the lattice alone (i.e., the lattice without the chains attached). We also find the transmission to be strongly dependent on the way the chains are attached to the lattice.

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