[Wien] band structure of Ge in the zinc blende structure

[Fred Nastos]

On July 30, 2003 05:35 am, mokhtari wrote:
> Dear Wien users
> I am studing the electronic properties of the Ge
> compound in the zinc blende phase. when I used the LDA
> approximation, I obtained semimetal material. then I
> used different GGA methods but I get a direct band gap
> between Gama-Gama with amount of zero or a smal
> quantity. There are some experimental data for this
> case show that this material has an indirect band gap
> which is Gama-L with value equal to 0.74 eV. Is there
> any body to help me for solving this problem.

See Phys. Rev. Lett. 55, 1418 (1985).