Multifractal scaling of electronic transmission resonances in perfect and imperfect Fibonacci $δ$-function potentials

Details Multifractal scaling of electronic transmission resonances in perfect and imperfect Fibonacci $δ$-function potentials Multifractal scaling of electronic transmission resonances in perfect and imperfect Fibonacci $δ$-function potentials

1998-11-25

arxiv.org/abs/cond-mat/9811350v1

Physics

Condensed Matter

7 pages, (Hard copies of 5 figures available on request from prabhat@boson.bose.res.in)

Scientific paper

We present here a detailed multifractal scaling study for the electronic transmission resonances with the system size for an infinitely large one dimensional perfect and imperfect quasiperiodic system represented by a sequence of $\delta$-function potentials. The electronic transmission resonances in the energy minibands manifest more and more fragmented nature of the transmittance with the change of system sizes. We claim that when a small perturbation is randomly present at a few number of sites, the nature of electronic states will change and this can be understood by studying the electronic transmittance with the change of system size. We report the different critical states manifested in the size variation of the transmittance corresponding to the resonant energies for both perfect and imperfect cases through multifractal scaling study for few of these resonances.

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