檢視 $negfionizedimpurity 的原始碼

$negfionizedimpurity  is the command to setup the related parameters of ionized impurity scattering.<br>
The equation of ionized impurity scattering:
  <math>W_{imp}(k)=4\pi F(\frac{2k}{\lambda})^{2}[\frac{1}{\sin^2(\frac{\theta}{2})+(\frac{\lambda}{2k})^2}]^{2}</math><br>
  <math>F=\frac{1}{\hbar}[\frac{Ze^{2}}{\epsilon}]^{2}\frac{N_{1D}(E_{k})}{32k^{4}}N_{I}</math><br>

 $negfionizedimpurity
 doping density (S and D)   doping density (channel)   channel-i   channel-f

Example:
 $negfionizedimpurity
  doping density (S and D)   doping density (channel)   channel-i   channel-f

In this case we have 681 mesh grids from drain(left) to source(right), and the position of channel is from 300 to 400. The doping concentration for source and drain is <math>1*10^{24}(1/m^2)</math>, and that for channel is <math>1*10^{0}(1/m^2)</math>.<br>
related commands:
  [[$ifsolvenegf]],  [[$negfifscattering]]