"Solvetimestep2D" 修訂間的差異

於 2018年7月9日 (一) 15:26 的修訂

$solvetimestep2D is a command for solving the transient behavior of the device. The format is

$solvetimestep2D
number_of_different_steps(Nt)
steptype contact_type  $\delta t ~~ t_{total}$  par1 par2 par3 par4 ....    
steptype contact_type  $\delta t ~~ t_{total}$  par1 par2 par3 par4 ....    
...
steptype contact_type  $\delta t ~~ t_{total}$  par1 par2 par3 par4 ....    repeat Nt times

The number of parameters depeding on step type. Now we have 3 step types

Steptype  = 1:  

 $\delta t,~~ t_{total},~~ vg_0$ 

 vg=vg_end for t<0, for t>0, vg= $vg_0$

Steptype  = 2:  

 $\delta t,~~ t_{total},~~ vg_0 ,~~ A_{0} ,~~ \omega,~~ c_{0}$ 

 $vg=vg_0 + A_{0} \times sin\left( 2\pi \omega t + c_0 \right)$

Steptype  = 3:  

 $\delta t, ~~t_{total},~~ vg_0 ,~~ A_{0} ,~~ \omega ,~~ c_{0}$ 

 $vg=vg_0 + int(A_{0} \times sin\left( 2\pi \omega t + c_0 \right))$

contact_type

2: gate
3: source
4: drain

Steptype  = 4:  

 $\delta t,~~ t_{total},~~ vg_0$ 

vg=vg_end for t<0, for t>0, vg= $vg_0$  , generation = system generation at t<0 and generation =0 for t> 0

Steptype  = 5:  

 $\delta t,~~ t_{total},~~ vg_0 ,~~ \omega ,~~ c_{0}$ 

vg=vg_end for t<0, for t>0, vg= $vg_0$  , generation = gen(system)* $(0.5+0.5*cos (\omega * t + c_{0}))$

Steptype  = 5:  

 $\delta t,~~ t_{total},~~ vg_0 ,~~ \omega ,~~ c_{0}$ 

vg=vg_end for t<0, for t>0, vg= $vg_0$  , generation = gen(system)* $Int(0.5+0.5*cos (\omega * t + c_{0}))$

For example:

$solvetimestep2D
2
2 2 1.0e-10 1.0e-6 3.00 0.1 1.0e6 0.0 
2 4 1.0e-10 1.0e-6 3.00 0.1 1.0e6 0.0 
  $vg=3.0 + 0.1 \times sin\left( 2\pi \times 10^{6} t \right)$ 

  $vd=3.0 + 0.1 \times sin\left( 2\pi \times 10^{6} t \right)$

related:
$savetimestep2D

@@ 行 34： / 行 34： @@
  Steptype  = 5:  <br>
  <math>\delta t,~~ t_{total},~~ vg_0 ,~~ \omega ,~~ c_{0}</math><br>
- vg=vg_end for t<0, for t>0, vg=<math> vg_0  </math> , generation = gen(system)*<math> ( cos (\omega * t + c_{0})) </math> <br>
+ vg=vg_end for t<0, for t>0, vg=<math> vg_0  </math> , generation = gen(system)*<math> (0.5+0.5*cos (\omega * t + c_{0})) </math> <br>
+ Steptype  = 5:  <br>
+ <math>\delta t,~~ t_{total},~~ vg_0 ,~~ \omega ,~~ c_{0}</math><br>
+ vg=vg_end for t<0, for t>0, vg=<math> vg_0  </math> , generation = gen(system)*<math> Int(0.5+0.5*cos (\omega * t + c_{0})) </math> <br>

"Solvetimestep2D" 修訂間的差異

於 2018年7月9日 (一) 15:26 的修訂

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