Tunneling escape time of electrons from a quantum well with Γ-Χ mixing effect
- 22 August 1994
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 65 (8) , 1036-1038
- https://doi.org/10.1063/1.112144
Abstract
By using the envelope function method we calculated the tunneling escape time of electrons from a quantum well. We adopted a simplified interface matrix to describe the Γ-Χ mixing effect, and employed a wave packet method to determine the tunneling escape time. When the Γ state in the well was in resonance with the Χ state in the barrier, the escape time reduced remarkably. However, it was possible that the wave functions in two different channels, i.e., Γ-Γ-Γ and Γ-Χ-Γ, could interfere destructively, leading the escape time greater than that of pure Γ-Γ-Γ tunneling.Keywords
This publication has 9 references indexed in Scilit:
- Valley mixing in short-period superlattices and the interface matrixPhysical Review B, 1993
- Γ-Xinterference effects on quasi-bound-state lifetimes in GaAs/AlAs double-barrier heterostructuresPhysical Review B, 1993
- Γ-X-Γ magneto-tunneling oscillations in
GaAs AlAs Superlattices and Microstructures, 1992 - Direct determination of the electron-tunneling escape time from a GaAs/As quantum well by transient-capacitance spectroscopyPhysical Review B, 1991
- Γ-X mixing effect in GaAs/AlAs superlattices and heterojunctionsPhysical Review B, 1990
- The effect of the X conduction band minima on resonant tunnelling and charge build-up in double barrier structures based on n-GaAs/(AlGa)AsSolid-State Electronics, 1989
- Tunneling escape time of electrons from a quantum well under the influence of an electric fieldApplied Physics Letters, 1989
- A new matrix method for tunnelling in heterostructures: Γ, X effects in single-barrier systemsSemiconductor Science and Technology, 1988
- Observation by resonant tunneling of high-energy states in GaAs-As quantum wellsPhysical Review B, 1986