Back to Search
Start Over
Quantum confinement effect on the effective mass in two-dimensional electron gas of AlGaN/GaN heterostructures.
- Source :
- Journal of Applied Physics; Apr2009, Vol. 105 Issue 7, p073703-073709, 6p, 2 Charts, 5 Graphs
- Publication Year :
- 2009
-
Abstract
- We report the results of direct measurements and a theoretical investigation of the in-plane effective mass in the two-dimensional electron gas of nominally undoped AlGaN/GaN heterostructures with a different degree of quantum confinement. It is shown that in most cases the conduction band nonparabolicity effect is overestimated and the electron wave-function penetration into the barrier layer should be taken into account. The contribution of the wave-function hybridization is determined to play the dominant role. The band edge effective mass value is deduced to be (0.2±0.01)m<subscript>0</subscript>. [ABSTRACT FROM AUTHOR]
- Subjects :
- GALLIUM nitride
HETEROSTRUCTURES
ELECTRON gas
NITRIDES
EPITAXY
WAVE functions
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 105
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 37610535
- Full Text :
- https://doi.org/10.1063/1.3100206