Información del autor
Documentos disponibles escritos por este autor (14)
Añadir el resultado a su cesta Hacer una sugerencia Refinar búsqueda
texto impreso
Domínguez-Adame Acosta, Francisco ; Maciá Barber, Enrique Alfonso ; Sánchez, Angel | American Physical Society | 1993-09-01Normal modes of one-dimensional disordered chains with two couplings, one of them assigned at random to pairs in an otherwise perfect chain, are investigated. We diagonalize the dynamical matrix to find the normal modes and to study their spatia[...]texto impreso
Díez Gutiérrez, Enrique Javier ; Sánchez, Angel ; Domínguez-Adame Acosta, Francisco | Elsevier | 1996-05-27We introduce a model of a nonlinear double-barrier structure to describe in a simple way the effects of electron-electron scattering while remaining analytically tractable. The model is based on a generalized effective-mass equation where a nonl[...]texto impreso
Maciá Barber, Enrique Alfonso ; Domínguez-Adame Acosta, Francisco ; Sánchez, Angel | American Physical Society | 1994-04-01We derive a discrete Hamiltonian describing a Fibonacci superlattice in which the electronic potential is taken to be an array of equally spaced delta potentials, whose strengths modulate the chemical composition in the growth direction. In this[...]texto impreso
Díez, E. ; Sánchez, Angel ; Domínguez-Adame Acosta, Francisco ; Berman, Gennady P. | American Physical Society | 1996-11-15We study the dynamical behavior of disordered quantum well-based semiconductor superlattices where the disorder is intentional and short-range correlated. We show that, whereas the transmission time of a particle grows exponentially with the num[...]texto impreso
Maciá Barber, Enrique Alfonso ; Domínguez-Adame Acosta, Francisco ; Sánchez, Angel | American Physical Soc | 1994-08We study the relationship between the electronic spectrum structure and the configurational order of one-dimensional quasiperiodic systems. We take the Fibonacci case as a specific example, but the ideas outlined here may be useful to accurately[...]texto impreso
Sánchez, Angel ; Maciá Barber, Enrique Alfonso ; Domínguez-Adame Acosta, Francisco | American Physical Society | 1994-06-01We consider the electron dynamics and transport properties of one-dimensional continuous models with random, short-range correlated impurities. We develop a generalized Poincare map formalism to cast the Schrodinger equation for any potential in[...]texto impreso
Sánchez, Angel ; Domínguez-Adame Acosta, Francisco ; Berman, Gennady P. ; Izrailev, Felix | American Physical Society | 1995-03-01We propose an explanation of the bands of extended states appearing in random one-dimensional models with correlated disorder, focusing on the continuous random-dimer model [A. Sanchez, E. Macia, and F. Dominguez-Adame, Phys. Rev. B 49, 147 (199[...]texto impreso
Kamppeter, Till ; Mertens, Franz G. ; Sánchez, Angel ; Bishop, A. R. ; Domínguez-Adame Acosta, Francisco ; Grønbech-Jensen, N. | Springer | 1998We study the effects of finite temperature on the dynamics of non-planar vortices in the classical, two-dimensional anisotropic Heisenberg model with XY- or easy-plane symmetry. To this end, we analyze a generalized Landau-Lifshitz equation incl[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Maciá Barber, Enrique Alfonso ; Sánchez, Angel | American Physical Society | 1995-01-01Incoherent 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-simi[...]texto impreso
Díez, E. ; Sánchez, Angel ; Domínguez-Adame Acosta, Francisco | IEEE-Inst Electrical Electronics Engineers Inc. | 1995-11We study disordered quantum-well-based semiconductor superlattices where the disorder is intentional and short-range correlated, Such systems consist of quantum wells of two different thicknesses randomly distributed along the growth direction, [...]texto impreso
Sánchez, Angel ; Bishop, A. R. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 1994-05We have examined the dynamical behavior of the kink solutions of the one-dimensional sine-Gordon equation in the presence of a spatially periodic parametric perturbation. Our study clarifies and extends the currently available knowledge on this [...]texto impreso
Domínguez-Adame Acosta, Francisco ; Maciá Barber, Enrique Alfonso ; Sánchez, Angel | American Physical Society | 1994-09-01Optical 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.[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Sánchez, Angel ; Díez Gutiérrez, Enrique Javier | American Physical Society | 1994-12-15We theoretically study electron transport in disordered, quantum-well-based, semiconductor superlattices with structural short-range correlations. Our system consists of equal-width square barriers and quantum wells with two different thicknesse[...]texto impreso
Díez, E. ; Domínguez-Adame Acosta, Francisco ; Sánchez, Angel | American Institute of Physics | 1995-05-01We study resonant tunneling in B-S-doped diodes grown by Si-molecular beam epitaxy. A Thomas-Fermi approach is used to obtain the conduction-band modulation. Using a scalar Hamiltonian within the effective-mass approximation. we demonstrate that[...]
