Dear Siesta Users,
I was confused about the K-point in transiesta calculation. for example:
%block kgrid_Monkhorst_Pack  
  a    0    0     0.0
  0    b    0    0.0
  0    0    c    0.0
%endblock kgrid_Monkhorst_Pack
some articles set a=b=1, c about 20 to 30.
while some others set a=b=3~6, c=1.
I hear from the http://emuch.net/bbs/ that transiesta would not take c in to 
account, namely there would be no difference between c=1 and c=30.
but I got different results when set a=b=2, c=1 and a=b=2, c=9. so I think that 
it might be incorrect.
some other people says that the value of a, b, c should be different for the 
periodic systems and nonperiodic systems.
 
I am wondering how to set them on earth. 
 
Thank you very much for your help. I look forward to your responses!

Responder a