RT Journal Article
T1 Effects of the electronic structure on the dc conductance of Fibonacci superlattices
A1 Maciá, Enrique
A1 Domínguez-Adame, Francisco
A1 Sánchez, Angel
AB We derive a discrete Hamiltonian describing a Fibonacci superlattice in which the electronic potentialis taken to be an array of equally spaced 0 potentials, whose strengths modulate the chemicalcomposition in the growth direction. In this model both diagonal and off-diagonal elements of theHamiltonian matrix become mutually related through the potential strengths. The correspondingenergy spectrum and related magnitudes, such as the Lyapunovcoefficient, transmission coefficient,and Landauer resistance, exhibit a highly fragmented, self-similar nature. We investigate the influenceof the underlying spectrum structure on the dc conductance at different temperatures obtaininganalytical expressions which relate special features of the dc conductance with certain parametersthat characterize the electronic spectrum of Fibonacci superlattices.
PB American Physical Society
SN 1098-0121 (print version)
SN 1550-235X (online version)
YR 1994
FD 1994-04-01
LK https://hdl.handle.net/10016/15187
UL https://hdl.handle.net/10016/15187
LA eng
NO A.S. is partially supported by DGICyT (Spain) through Project No. PB92-0248, and by European Union through NETWORK nonlinear Spatio-Temporal Structures in Semiconductors, Fluids, and Oscillator Ensembles.
DS e-Archivo
RD 3 may. 2024