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
 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
 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
 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
 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