Electron tunneling time into a quantum disk
β Scribed by N. Sawaki; M. Ishida
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 335 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0167-9317
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β¦ Synopsis
The tunnelin process of a wavepackct into a quantum disk through a pot&al barrier is studied with a two dimensional model system. The in@mted probability density achieved in a quantum disk/dot shows a linear increase followed by a saturation. The tunneling probability/tunueling time is discussed in the particular case of electron tuuneliug in a system of mesoscopic size.
π SIMILAR VOLUMES
The phase time of an electron tunneling through a heterostructure potential barrier is derived, including the position-dependent effective-mass effect. The usual phase time of the tunneling derived assuming a homogeneous effective mass deviates from this result by \(-15 \% \sim-28 \%\).
Electron energy levels in single dots, and energy splitting and tunneling times in stacked quantum dots are calculated as functions of structure parameters. An effective mass approach is used to solve the SchrΓΆdinger equation for cylindrical dots with finite confinement potentials. Strong confinemen