
Accession Number : ADA190673
Title : Local Density of States in DoubleBarrier Resonant Tunneling Structures.
Descriptive Note : Interim rept. Dec 86Apr 87,
Corporate Author : HARRY DIAMOND LABS ADELPHI MD
Personal Author(s) : Bahder, Thomas B ; Bruno, John D ; Hay, Ralph G ; Morrison, Clyde A
PDF Url : ADA190673
Report Date : Feb 1988
Pagination or Media Count : 19
Abstract : We calculate the local density of states between the barriers of a doublebarrier resonant tunneling structure within the context of a simplified model. As the area of the barriers increases, there is a smooth crossover in the density of states from a threedimensional square root of energy behavior to a two dimensional steplike behavior. The local onedimensional density of states corresponding to a fixed electron momentum transverse to the barriers is also calculated and shows sharp peaks at energies corresponding to the quasibound states between the wells. The width of the lowest quasibound state is computed as a function of barrier area. Keywords include: Quantum well, Microelectronics, Density of states, Resonant tunneling, and Gallium arsenide.
Descriptors : *MICROELECTRONICS, *TUNNELING(ELECTRONICS), *QUANTUM ELECTRONICS, BARRIERS, DENSITY, ELECTRONS, ENERGY, GALLIUM ARSENIDES, MODELS, MOMENTUM, ONE DIMENSIONAL, QUANTUM THEORY, RESONANCE, SHARPNESS, SIMPLIFICATION, SQUARE ROOTS, STRUCTURES, THREE DIMENSIONAL
Subject Categories : Quantum Theory and Relativity
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE