We examined discrete time-dependent changes in the conductance of a one-dimensional (1D) wire, due to a change in the scattering potential of a single defect, as a function of the width of the wire. We discovered that the discrete time-dependent changes are suppressed whenever a 1D subband is fully occupied. Our observations explicitly demonstrate that defect scattering and excess noise can be suppressed in a 1D wire.
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Timp et al. (1990) studied this question.
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