Abstract
The renormalization-decimation method is used to study the transmittivity of atomic wires, with one or more side branches attached at multiple sites. The rescaling process reduces all the branches, attached at an atomic site, to an equivalent impurity, from which the transmission probability can be calculated using the Lippmann-Schwinger equation. Numerical results show that the subsequent T(E) curves, where particular attention is paid to the numbers and locations of resonances and anti-resonances, are highly sensitive to the values of each system's key parameters. These findings provide insight into the design of wires with specific desired properties.
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