Back to Search
Start Over
An average-bond-energy method used for band-offset calculation for a strained heterojunction
An average-bond-energy method used for band-offset calculation for a strained heterojunction
- Source :
- Journal of Physics: Condensed Matter. 12:7759-7770
- Publication Year :
- 2000
- Publisher :
- IOP Publishing, 2000.
-
Abstract
- We have extended the average-bond-energy method to study the strained-heterojunction band offset. Through a detailed study of the effect of hydrostatic and uniaxial strains on the energy of the average valence band edge Ev.av relative to the average bond energy, we find that Ev.av remains basically unchanged under different strain conditions, and that the deformation potential av.av corresponding to Ev.av is much smaller than the av for other analogous methods. Thus, in the average-bond-energy method, the valence band offset ?Ev can be obtained neglecting av.av. It is only necessary to calculate the valence band maximum energy relative to the average bond energy before the strain and to use the experimental values of the deformation potential b and spin-orbit splitting ?0 to determine the splitting value for the valence band. It is not necessary to calculate the band structures under various strain conditions. This simplified calculation method involves only a small calculational burden; therefore, it can conveniently be used to predict the strained-heterojunction band offset.
Details
- ISSN :
- 1361648X and 09538984
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Journal of Physics: Condensed Matter
- Accession number :
- edsair.doi...........9182a06ee48f7c77efdba4ea45d47020
- Full Text :
- https://doi.org/10.1088/0953-8984/12/35/311