Support Options

Submit a Support Ticket

Home Questions and Answers Highly non-spherical heavy hole bands for...

Questions and Answers


Highly non-spherical heavy hole bands for bulk GaAs??

I calculated the band structure of bulk GaAs. The effective masses for the heavy holes were given as:

100 0.376848
110 0.657788
111 0.839029

I thought the heavy hole bands of GaAs were close to spherical??

Report abuse

Chosen Answer

  1. 0 Dislike

    Yang Liu


    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.

    Reply Report abuse

    Please login to answer the question.

0 Responses

No other responses made., a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.