Now showing items 41-50 of 169
Rotational anomalies of mesoscopic rings
(Elsevier, 1993-10-25)
The electronic contribution to the moment of inertia of single-channel metal rings is analyzed. In rings threaded by a magnetic flux, the electron moment Ie exhibits a periodic pattern with maxima at [theta]0=hc/e or ...
Differential and integral methods for three-dimensional inverse scattering problems with a non-local potential
(IOP Publishing Ltd, 1988-05-01)
The inverse scattering problem for the three-dimensional Schrodinger equation with a non-local potential diagonal in the radius variable is considered. Generalised Gel'fand-Levitan and Marchenko integral equations are ...
Raman scattering and photoluminescence studies of two-dimensional electron systems in Ge/GaAs heterostructures
(Elsevier, 1985)
Resonant Raman scattering experiments on n-Ge/n-GaAs (100) heterostructures reveal transitions involving quasi-two-dimensional electron states in Ge-accumulation layers. The experiments were performed in the range of the ...
Numerical investigation of mesh size convergence rate of the finite element method in MESFET simulation
(Elsevier, 1981-06)
The mesh size convergence rate of the finite element method in two-dimensional GaAs MESFET simulation has been investigated numerically. The equations governing MESFET operation and the finite element formulation of these ...
Development of an atmospheric climate model with self-adapting grid and physics
(IOP Publishing Ltd, 2005-01-01)
An adaptive grid dynamical core for a global atmospheric climate model has been developed. Adaptations allow a smooth transition from hydrostatic to non-hydrostatic physics at small resolution. The adaptations use a parallel ...
Performance bounds on depth estimation of bioelectrical sources
(IOP Publishing Ltd, 1992-12-01)
The unknown depth of bioelectrical sources confined to a horizontal plane in a horizontally layered volume conductor is estimated from noisy measurements of electrical potential on another, parallel plane (e.g. the surface). ...
The growth of resonant tunneling hot electron transistors using chemical beam epitaxy
(Elsevier, 1994-03-01)
A systematic growth study of InGaAs/AlAs/InGaAsP resonant tunneling hot electron transistors (RHETs) was performed using chemical beam epitaxy (CBE). The resonant tunneling hot electron transistors studied consist of a ...
Scatter networks: a new approach for analysing information scatter
(IOP Publishing Ltd, 2007-07-01)
Information on any given topic is often scattered across the Web. Previously this scatter has been characterized through the inequality of distribution of facts (i.e. pieces of information) across webpages. Such an approach ...
Interferences and coherent control of excitons in GaAs quantum wells
(IOP Publishing Ltd, 1999-08-09)
Coherent control and light-heavy-hole beats observed in transient optical experiments in GaAs quantum wells are discussed in terms of a free-boson model. The properties of the exactly calculated wavefunction of the ...
Carrier relaxation in quantum wires: consequences for quantum wire laser performance
(IOP Publishing Ltd, 1994-05-01)
Quantum wire lasers are expected to require very low threshold currents owing to the nature of the 1D density of states which develops a sharp peak at the band edge and ensures superior laser characteristics. However, ...