Local Density of States in Double-Barrier Resonant Tunneling Structures.
Interim rept. Dec 86-Apr 87,
HARRY DIAMOND LABS ADELPHI MD
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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.
- Quantum Theory and Relativity
- Electricity and Magnetism