RT Journal Article T1 Hierarchical description of phonon dynamics on finite Fibonacci superlattices A1 Maciá Barber, Enrique Alfonso AB We study the phonon dynamics of Fibonacci heterostructures where two kinds of order (namely, periodic and quasiperiodic) coexist in the same sample at different length scales. We derive analytical expressions describing the dispersion relation of finite Fibonacci superlattices in terms of nested Chebyshev polynomials of the first and second kinds. In this way, we introduce a unified description of the phonon dynamics of Fibonacci heterostructures, able to exploit their characteristic hierarchical structure in a natural way. PB American Physical Society SN 1098-0121 YR 2006 FD 2006-05 LK https://hdl.handle.net/20.500.14352/52107 UL https://hdl.handle.net/20.500.14352/52107 LA eng NO ©2006 The American Physical Society.This work has been supported by the Universidad Complutense de Madrid through Project No. PR27/05-14014-BSCH. I warmly thank Víctor R. Velasco, Gerardo G. Naumis, and Rogelio Rodríguez-Oliveros for very useful comments and Victoria Hernández for a critical reading of the manuscript. NO Universidad Complutense de Madrid DS Docta Complutense RD 30 jun 2025