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We study electronic transport properties of disordered polymers in a quasi-one-dimensional model with fully three-dimensional interaction potentials. We consider such quasi-one-dimensional lattices in the presence of both uncorrelated and short-[...]texto impreso
Díaz García, Elena ; Sedrakyan, A. ; Sedrakyan, D. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 2007-01We consider a ladder model of DNA for describing carrier transport in a fully coherent regime through finite segments. A single orbital is associated to each base, and both interstrand and intrastrand overlaps are considered within the nearest-n[...]texto impreso
We study how the in8uence of structural correlations in disordered systems manifests itself in experimentally measurable magnitudes, focusing on dc conductance of semiconductor superlattices with general potential pro6les. We show that the exist[...]texto impreso
Rodriguez, A. ; Martín-Delgado Alcántara, Miguel Ángel ; Rodriguez-Laguna, J. ; Sierra, G. ; Malyshev, Andrey ; Domínguez-Adame Acosta, Francisco ; Lemaistre, I. J. | Elsevier Science BV | 2001-12The standard one-parameter scaling theory predicts that all eigenstates in two-dimensional random lattices are weakly localized. We show that this claim fails in two-dimensional dipolar Frenkel exciton systems. The linear energy dispersion at th[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Malyshev, Andrey ; Rodriguez, A. | American Institute of Physics | 2000-02-08We present results of numerical simulations of optical absorption line shape of Frenkel excitons in two-dimensional disordered lattices. Disorder is generated by Gaussian randomness in the molecular positions. The intersite interaction is consid[...]texto impreso
Díaz García, Elena ; Cabrera Granado, Eduardo ; Domínguez-Adame Acosta, Francisco ; Gómez Calderón, Óscar ; Melle Hernández, Sonia ; Díaz Fernández, Álvaro ; Villas Pazos, Alberto | 2018-06-30La iniciativa de este proyecto viene justificada a la vista del gran interés generado por algunos de los materiales docentes diseñados por nuestro grupo en anteriores proyectos, en los que se vienen desarrollando diferentes herramientas docentes[...]texto impreso
Rodriguez, A. ; Malyshev, Andrey ; Sierra, G. ; Martín-Delgado Alcántara, Miguel Ángel ; Rodriguez-Laguna, J. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 2003-01-17The single-parameter scaling hypothesis predicts the absence of delocalized states for noninteracting quasiparticles in low-dimensional disordered systems. We show analytically, using a supersymmetric method combined with a renormalization group[...]texto impreso
Díaz García, Elena ; Rodriguez, A. ; Domínguez-Adame Acosta, Francisco ; Malyshev, Andrey | EDP Sciences | 2005-12Optical spectroscopy usually fails in detecting localization-delocalization (Anderson) transitions. We report on an anomalous behavior of the absorption spectrum in a one-dimensional lattice with long-range correlated diagonal disorder, having a[...]texto impreso
Electrons moving in a tilted periodic potential perform a periodic motion, known as Bloch oscillation. Within a semiclassical description, the crystal momentum increases linearly with time until it reaches the boundary of the first Brillouin zon[...]texto impreso
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
Gonzalez-Santander, C. ; Apostolova, T. ; Domínguez-Adame Acosta, Francisco | IOP Publishing Ltd. | 2013-08-21We calculate the binding energy of on-and off-center hydrogenic impurities in a parabolic quantum dot subjected to an intense high-frequency laser field. An exactly solvable model that replaces the actual Coulomb interaction with the donor by a [...]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
Díaz García, Elena ; Lima, R. P. A. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 2008-10The Peyrard-Bishop-Holstein model has been previously introduced as an appropriate framework for the description of polaronic effects for charge migration in DNA. We study numerically the Peyrard-Bishop-Holstein model when the charge carrier is [...]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
Gonzalez-Santander, C ; Orellana, P. A. ; Domínguez-Adame Acosta, Francisco | EPL Association, European Physical Society | 2013-04We report on the formation of bound states in the continuum driven by AC fields. The considered system consists of a quantum ring connected to two leads. An AC side-gate voltage controls the interference of electrons passing through the system. [...]
