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Moura, F. A. B. F., de ; Viana, L. P. ; Lyra, M. L. ; Malyshev, Andrey ; Domínguez-Adame Acosta, Francisco | Elsevier | 2008-10-27We study the dynamics of an electron wave-packet in a two-dimensional square lattice with an aperiodic site potential in the presence of an external uniform electric field. The aperiodicity is described by epsilon(m) = V cos(pi alpha m(x)(nu x))[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Malyshev, Andrey ; Moura, F. A. B. F., de ; Lyra, M. L. | American Physical Society | 2003-11-07We study the dynamics of an electron subjected to a uniform electric field within a tight-binding model with long-range-correlated diagonal disorder. The random distribution of site energies is assumed to have a power spectrum S(k)similar to1/k([...]texto impreso
Moura, F. A. B. F., de ; Lyra, M. L. ; Domínguez-Adame Acosta, Francisco ; Malyshev, Andrey | American Physical Society | 2005-03We study the dynamics of an electron subjected to a static uniform electric field within a one-dimensional tight-binding model with a slowly varying aperiodic potential. The unbiased model is known to support phases of localized and extended one[...]texto impreso
Moura, F. A. B. F., de ; Lyra, M. L. ; Domínguez-Adame Acosta, Francisco ; Malyshev, Andrey | IOP Publishing Ltd. | 2007-02-07We study numerically the dynamics of a one-electron wavepacket in a two-dimensional random lattice with long-range correlated diagonal disorder in the presence of a uniform electric field. The time-dependent Schrodinger equation is used for this[...]texto impreso
Carvalho, R.C.P. ; Lyra, M. L. ; de Moura, F.A.B.F. ; Domínguez-Adame Acosta, Francisco | IOP Publishing Ltd. | 2011-05-04We study the wavepacket dynamics in a two-channel Anderson model with correlated diagonal disorder. To impose correlations in the disorder distribution we construct the on-site energy landscape following both symmetric and antisymmetric rules. O[...]texto impreso
Moura, FABF, de ; Malyshev, Andrey ; Lyra, M. L. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 2005-05We perform both analytical and numerical studies of the one-dimensional tight-binding Hamiltonian with stochastic uncorrelated on-site energies and nonfluctuating long-range hopping integrals J(mn) = J/vertical bar m-n vertical bar(mu). It was a[...]
