On the Nature of Electronic Wave Functions in One-Dimensional Self-Similar and Quasiperiodic Systems
Figure 6
Absolute value of the Fourier coefficients of a quasiperiodic (Fibonacci) structure, an aperiodic Thue-Morse structure with a singular-continuous spectrum, and an aperiodic Rudin-Shapiro structure with an absolutely continuous spectrum (Courtesy of Luca Dal Negro).