「$negfionizedimpurity」：修訂間差異
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小無編輯摘要 |
無編輯摘要 |
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| 第3行： | 第3行： | ||
<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>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> | <math>F=\frac{1}{\hbar}[\frac{Ze^{2}}{\epsilon}]^{2}\frac{N_{1D}(E_{k})}{32k^{4}}N_{I}</math><br> | ||
$negfionizedimpurity | |||
NdSD NdC Channeli Channelf | |||
Example: | Example: | ||
$negfionizedimpurity | $negfionizedimpurity | ||
1.0e24 1.0e0 300 400 | 1.0e24 1.0e0 300 400 | ||
In this case we have 681 mesh grids from drain(left) to source(right), and the position of channel is from 300 to 400. The doping concentration for source and drain is <math>1*10^{24}(1/m^2)</math>, and that for channel is <math>1*10^{0}(1/m^2)</math>.<br> | In this case we have 681 mesh grids from drain(left) to source(right), and the position of channel is from 300 to 400. The doping concentration for source and drain is <math>1*10^{24}(1/m^2)</math>, and that for channel is <math>1*10^{0}(1/m^2)</math>.<br> | ||
related commands: | related commands: | ||
[[$ifsolvenegf]], [[$negfifscattering]] | [[$ifsolvenegf]], [[$negfifscattering]] | ||
於 2018年7月30日 (一) 01:22 的修訂
$negfionizedimpurity is the command to setup the related parameters of ionized impurity scattering.
The equation of ionized impurity scattering:
$negfionizedimpurity NdSD NdC Channeli Channelf
Example:
$negfionizedimpurity 1.0e24 1.0e0 300 400
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 , and that for channel is .
related commands:
$ifsolvenegf, $negfifscattering