Accession Number : ADA190673

Title :   Local Density of States in Double-Barrier Resonant Tunneling Structures.

Descriptive Note : Interim rept. Dec 86-Apr 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 double-barrier 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 three-dimensional square root of energy behavior to a two dimensional step-like behavior. The local one-dimensional 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 quasi-bound states between the wells. The width of the lowest quasi-bound 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