The property of electronic transport in the Fibonacci array of ideal one-dimensional Aharonov-Bohm rings is studied utilizing the Landauer formalism and by analyzing the quantity called "the Fibonacci invariant," which is derived from renormalization-group ideas. In contrast to previous studies, our invariant is not independent of the Fibonacci generation number j in a limited sense despite its expression having the same form as the previous ones. Even so, this "I-function," which is a j-dependent invariant, is shown to preserve its importance in the study of the transport properties of a quasiperiodic system. The line shape of the I-function at j Ն 15 exhibits a fractal-like behavior within the transmission rift ͑i.e., fine transmission gap͒. This fractallike behavior of the line shape of the I-function is characterized by a scaling law. Self-similarity appears in the trace of the transmission probability, when the scaling index is in good agreement with the scaling index at another j.
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