檢視 $addefmassxyz 的原始碼

$addefmassxyz is the command to input effective mass along different directions and considering the valley number. 
The format is Z is the growth direction. 

 $addefmassxyz
 type  mhh_z  mhh_x  mhh_y N_valley <math>\Delta E_{hh}</math>  mlh_z  mlh_x  mlh_y N_valley <math>\Delta E_{lh}</math>  me_z  me_x  me_y N_valley <math>\Delta E_{c}</math> me2_z  me2_x  me2_y N_valley  <math>\Delta E_{c2}</math>

If type = 1, the 2nd electron valley is not considered.  For example, For Si in the bulk condition with 6 valleys

 $addefmassxyz
 1 0.45 0.45 0.45 1 0.0 0.87 0.87 0.87 1 0.0 0.19 0.19 0.98 6 0.0
 1 0.45 0.45 0.45 1 0.0 0.87 0.87 0.87 1 0.0 0.19 0.19 0.98 6 0.0
 1 0.45 0.45 0.45 1 0.0 0.87 0.87 0.87 1 0.0 0.19 0.19 0.98 6 0.0
  

If type = 2, the 2nd electron valley is not considered. 
For GaAs material with 2nd valley has 3 valley in the X valley above gamma by 0.35eV
 $addefmassxyz
 2 0.45 0.45 0.45 1.0 0.0 0.78 0.78 0.78 1.0 0.0 0.067 0.067 0.067 1.0 0.0 1.2 0.15 0.15 3.0 0.35
 2 0.45 0.45 0.45 1.0 0.0 0.78 0.78 0.78 1.0 0.0 0.067 0.067 0.067 1.0 0.0 1.2 0.15 0.15 3.0 0.35
 2 0.45 0.45 0.45 1.0 0.0 0.78 0.78 0.78 1.0 0.0 0.067 0.067 0.067 1.0 0.0 1.2 0.15 0.15 3.0 0.35