8
GaAs zinc blende structure
Ga      0.0000    0.0000    0.0000
As      1.4200    1.4200    1.4200
Ga      2.8400    0.0000    1.4200
As      4.2600    1.4200    2.8400
Ga      0.0000    2.8400    1.4200
As      1.4200    4.2600    2.8400
Ga      2.8400    2.8400    2.8400
As      4.2600    4.2600    4.2600
