Questions and Answers: Closed Question
Status: Closed
Anonymous @ 04:32 PM on 28 Aug, 2008
Highly non-spherical heavy hole bands for bulk GaAs??
There is a scheduled outage that will affect nanoHUB.org simulation runs from Tuesday, May 15, 2012 at 6am EDT (10:00 UTC) until Thursday, May 17, 2012 at 5pm EDT (21:00 UTC). This outage will affect simulation jobs running on the Rossmann and Coates machines. Further details about affected tools can be found HERE. We apologize for the inconvenience.
Find information on common issues.
Ask questions and find answers from other users.
Suggest a new site feature or improvement.
Check on status of your tickets.
Status: Closed
Anonymous @ 04:32 PM on 28 Aug, 2008
Highly non-spherical heavy hole bands for bulk GaAs??
3 Like 0 Dislike
Yang Liu @ 03:41 PM on 05 Sep, 2008
Hi,
The valence bands are, in most cases, very non-parabolic. Density-of-states effective masses for holes can be found in textbooks, but it refers to the average mass to use when calculating the charge densities. All the orbit-coupling parameters in tight-binding are optimized to reproduce effective masses, bandgaps and other quantities measured from experiments. The reference for GaAs hole effective masses can be found in the paper:
T. B. Boykin, G. Klimeck, R. C. Bowen, and F. Oyafuso,“Diagonal parameter shifts due to nearest-neighbor displacements in empirical tight-binding theory,” Physical Review B 66, 125207, 2002
and also the refences in this paper too.
Report abuse