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Hakobyan, T. ; Sedrakyan, D. ; Sedrakyan, A. ; Gómez, I. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 2000-05-01Electron and phonon states in two different models of intentionally disordered superlattices are studied analytically as well as numerically. The localization length is calculated exactly and we found that it diverges for particular energies or [...]texto impreso
Gómez, I. ; Díez, E. ; Domínguez-Adame Acosta, Francisco ; Orellana, P. | Elsevier Science BV | 2003-06We present a novel model to calculate vertical transport properties such as conductance and current in unintentionally disordered double-barrier GaAs-AlxGa1-xAs heterostructures. The source of disorder comes from interface roughness at the heter[...]texto impreso
Malkova, N. ; Gómez, I. ; Domínguez-Adame Acosta, Francisco | American Physical Society | 2001-01-15In this work we deal with magnetic junction structures in which a homogeneous narrow-gap semiconductor is subjected to an inhomogeneous magnetic field. The aim of the paper is to elucidate magnetic field effects on the electron energy spectrum o[...]texto impreso
Gómez, I. ; Domínguez-Adame Acosta, Francisco ; Díez, E. ; Bellani, V. | American Institute of Physics | 1999-04-01We study the electron transmission probability in semiconductor superlattices where the height of the barriers is modulated by a Gaussian profile. Such structures act as efficient energy band-pass filters and, contrary to previous designs, it is[...]texto impreso
Gómez, I. ; Díez, E. ; Domínguez-Adame Acosta, Francisco ; Orellana, P. A. | American Institute of Physics | 2002-10-15We present a model based on the two-dimensional transfer matrix formalism to calculate single-electron states in a random wide-gap semiconductor quantum dot superlattice. With a simple disorder model both the random arrangement of quantum dots ([...]texto impreso
Orellana, P. A. ; Domínguez-Adame Acosta, Francisco ; Gómez, I. ; Guevara, M.L..L, de | American Physical Society | 2003-02-15A noninteracting quantum-dot array side coupled to a quantum wire is studied. Transport through the quantum wire is investigated by using a noninteracting Anderson tunneling Hamiltonian. The conductance at zero temperature develops an oscillatin[...]
