Zobrazeno 1 - 10
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pro vyhledávání: '"Macia, Enrique"'
Akademický článek
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Publikováno v:
Phys. Rev. Lett. 91, 228101 (2003)
We address the relation between long range correlations and charge transfer efficiency in aperiodic artificial or genomic DNA sequences. Coherent charge transfer through the HOMO states of the guanine nucleotide is studied using the transmission appr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309463
We present a detailed study of the dynamics of electronic wavepackets in Fibonacci semiconductor superlattices, both in flat band conditions and subject to homogeneous electric fields perpendicular to the layers. Coherent propagation of electrons is
Externí odkaz:
http://arxiv.org/abs/cond-mat/9610138
We numerically investigate the effects of inhomogeneities in the energy spectrum of aperiodic semiconductor superlattices, focusing our attention on Thue-Morse and Fibonacci sequences. In the absence of disorder, the corresponding electronic spectra
Externí odkaz:
http://arxiv.org/abs/cond-mat/9604141
We study motion and capture of excitons in self-similar linear systems in which interstitial traps are arranged according to an aperiodic sequence, focusing our attention on Fibonacci and Thue-Morse systems as canonical examples. The decay of the flu
Externí odkaz:
http://arxiv.org/abs/cond-mat/9602127
We report on a new class of critical states in the energy spectrum of general Fibonacci systems. By introducing a transfer matrix renormalization technique, we prove that the charge distribution of these states spreads over the whole system, showing
Externí odkaz:
http://arxiv.org/abs/cond-mat/9507100
Incoherent exciton dynamics in one-dimensional perfect lattices with traps at sites arranged according to aperiodic deterministic sequences is studied. We focus our attention on Thue-Morse and Fibonacci systems as canonical examples of self-similar a
Externí odkaz:
http://arxiv.org/abs/cond-mat/9407090
Incoherent transport of excitations in one-dimensional disordered lattices with pairs of traps placed at random is studied by numerically solving the corresponding master equation. Results are compared to the case of lattices with the same concentrat
Externí odkaz:
http://arxiv.org/abs/cond-mat/9407005
We study the relationship between the electronic spectrum structure and the configurational order of one-dimensional quasiperiodic systems. We take the Fibonacci case as an specific example, but the ideas outlined here may be useful to accurately des
Externí odkaz:
http://arxiv.org/abs/cond-mat/9406070
Optical absorption in a random one-dimensional lattice in the presence of paired correlated disorder is studied. The absorption line shape is evaluated by solving the microscopic equations of motion of the Frenkel-exciton problem in the lattice. We f
Externí odkaz:
http://arxiv.org/abs/cond-mat/9406069