Solid-State Dynamics and Quantum Transport in Novel Semiconductor Nanostructures
Annual rept. 1 Oct 1993-30 Sep 1994
NORTH CAROLINA STATE UNIV AT RALEIGH DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
Pagination or Media Count:
The objective of this research program is to study theoretically the underlying principles of solid-state dynamics and quantum mechanical transport of carriers in ultrasmall no vel semiconductor devices. The areas of research are 1 theory of phonon modes in reduced dimensions, 2 effects of band structure on electronic and optical properties of heterostructures, and 3 quantum transport in solids with special emphasis on the non-perturbative role of high-electric fields and many-body effects in dynamical processes. The treatment of these problems is mainly analytical through the development of macroscopic and microscopic physical models with an emphasis on quantum mechanical principles. At the same time, numerical approaches has also been utilized for realistic solutions with accuracy. Specific subjects discussed in this report include the effects of confinement and localization on optical and acoustic phonon modes, band mixing in phonon-assisted transitions, and Bloch electron quantum transport theory under hot-electron conditions. The knowledge developed in this work will be of major importance in explaining the novel phenomena and fundamental questions relating to the breakdown of classical solid-state electronics as device dimensional scales are reduced to the submicron and ultra-submicron regime.
- Electrical and Electronic Equipment