Light-Induced Electron Transfer Counter to an Electric Field Force in an Asymmetric Double Quantum Well
Abstract
Electron transfer counter to an electric-field force is predicted for an asymmetrical double quantum well subjected to a dc bias in response to optical (far ir) excitation of an intersubband electronic transition. This transfer exhibits a resonance enhancement when the bias electric field aligns the excited levels in the wide and narrow wells. The transfer effect is driven by the quantum-mechanical delocalization caused by the coherent resonant tunneling which prevails over the electric force. The effect brings about photoinduced increase of the potential difference at the double well and a transient electric current opposite to the direction favored by the bias.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1992
- Accession Number
- ADA244138
Entities
People
- Lakshmi N. Pandey
- Leonid S. Muratov
- Mark I Stockman
- Thomas F. George
Organizations
- Washington State University