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|Type:||Artigo de periódico|
|Title:||Damped Rabi wavepacket oscillations and damping time in correlated random ladders|
|Abstract:||In this work, we follow the time evolution of an initially localized one-electron wavepacket in a random ladder model with correlated diagonal disorder. Weak localization of the eigenstates is anticipated for antisymmetric cross-correlations with every base pair having the same average energy. We show that the wavepacket width develops damped Rabi-like oscillations after reaching the ladder's borders. The Rabi-like oscillations are shown to originate from the interference between neighboring energy eigenstates, while its damping is associated with a destructive interference due to the random scattering in the underlying random potential. The typical damping time t(d) is estimated as a function of the ladder size N and shown to increase as t(d)proportional to N-z with z = 0.62(4). The strong localization in the absence of antisymmetric cross-correlations suppresses the oscillations. (c) 2013 Elsevier B.V. All rights reserved.|
|Editor:||Elsevier Science Bv|
|Citation:||Physica E-low-dimensional Systems & Nanostructures. Elsevier Science Bv, v. 54, n. 157, n. 161, 2013.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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