Landauer Conductance of Generalized Fibonacci-Type Semiconductor Superlattices
نویسندگان
چکیده
منابع مشابه
Dynamical phenomena in Fibonacci semiconductor superlattices.
Angel Sánchez Departamento de Matemáticas, Escuela Politécnica Superior, Universidad Carlos III, E-28911 Leganés, Madrid, Spain; Grupo Interdisciplinar de Sistemas Complicados, Escuela Politécnica Superior, Universidad Carlos III, E-28911 Leganés, Madrid, Spain; and Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 ~Received 30 A...
متن کاملImpurity binding energies in semiconductor Fibonacci superlattices
We have calculated the density of states (DOS) of a GaAs–GaAl superlattice whose ratio between the potential energy of the impurities and the potential energy of the atoms at the lattice is a nth power of the golden mean t 1⁄4 ð1 þ ffiffi 5 p Þ=2; ðn 1⁄4 1; 2; 3;...Þ: Our theory uses Dyson’s equation together with a transfer-matrix treatment, within the tight-binding Hamiltonian model. The elec...
متن کاملKinetics of exciton photoluminescence in type - II semiconductor superlattices
The exciton decay rate at a rough interface in type-II semiconductor super-lattices is investigated. It is shown that the possibility of recombination of indirect excitons at a plane interface essentially affects kinetics of the exci-ton photoluminescence at a rough interface. This happens because of strong correlation between the exciton recombination at the plane interface and at the roughnes...
متن کاملSuppressed absolute negative conductance and generation of high-frequency radiation in semiconductor superlattices
– We show that space-charge instabilities (electric field domains) in semiconductor superlattices are the attribute of absolute negative conductance induced by small constant and large alternating electric fields. We propose the efficient method for suppression of this destructive phenomenon in order to obtain a generation at microwave and THz frequencies in devices operating at room temperatur...
متن کاملElectron Transport in Semiconductor Superlattices
In this paper, we rigorously derive a diffusion model for semiconductor superlattices, starting from a kinetic description of electron transport at the microscopic scale. Electron transport in the superlattice is modelled by a collisionless Boltzmann equation subject to a periodic array of localized scatters modeling the periodic heterogeneities of the material. The limit of a large number of p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1998
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.94.514