Effective mass for strained Zinkblende binaries

[DaPhil]

For k.p calculations (the literature you cite is almost exclusively that), the effective mass does not change once strain is introduced (see for example: S. Birner, Modeling of Semiconductor Nanostructures and Semiconductor–Electrolyte Interfaces, 2011, or T. B. Bahder, Phys. Rev. B 41, 11992 (1990)). Hence, the function meff_e_Gamma for strained alloys should be deleted.