New insights in the physics of resonant tunneling
Abstract
The time response in resonant tunneling has been investigated in terms of the derivative of the phase of the transfer function. Results show that at resonance, the response is drastically slowed down. The effects of damping, or finite mean free path, are accounted for by introducing a relaxation term into the Schrödinger equation which is similar to the use of the density operator with relaxation time. The quasi-states are not unique but depend on the mode of excitation.
- Publication:
-
Surface Science
- Pub Date:
- April 1990
- DOI:
- 10.1016/0039-6028(90)90341-5
- Bibcode:
- 1990SurSc.228..418T