Local density of states in double-barrier resonant-tunneling structures
- 15 April 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 37 (11) , 6256-6261
- https://doi.org/10.1103/physrevb.37.6256
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 (3D) square-root-of-energy behavior to a 2D steplike behavior. The local 1D 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
This publication has 17 references indexed in Scilit:
- Electron tunneling in GaAs/AlGaAs heterostructuresIEEE Journal of Quantum Electronics, 1987
- Calculation of electron propagation in heterostructuresSuperlattices and Microstructures, 1986
- Resonant tunneling properties of heterostructuresSuperlattices and Microstructures, 1986
- Transient Response of a Tunneling Device Obtainefrom the Wigner FunctionPhysical Review Letters, 1986
- Self-consistent analysis of resonant tunneling currentApplied Physics Letters, 1986
- Transfer Hamiltonian description of resonant tunnellingJournal of Physics C: Solid State Physics, 1986
- Simulation of resonant-tunneling heterostructure devicesJournal of Vacuum Science & Technology B, 1985
- Physics of resonant tunneling. The one-dimensional double-barrier casePhysical Review B, 1984
- Tunneling in a finite superlatticeApplied Physics Letters, 1973
- Tunneling through Thin Films with TrapsPhysical Review B, 1962