Hi Abbout,
Thanks for the reply.
If what you want is to calculate the conductance in the x direction for a
> system infinite in the x and y directions, you should know that the result
> is infinite.
In principle, when we have an infinite scattering system, electrons should
travel as plane
(sorry I send the previous email accidentally before finishing)
...In your case, you are studying the scattering by a simple uniform
rectangle, so the modes d not mix. you just need to diagonalize your system
in the y direction, and you will get infinite number of 1D systems, each
one you can
Dear Kristjan,
First, I would like to say that your problem is not very clear. If what you
want is to calculate the conductance in the x direction for a system
infinite in the x and y directions, you should know that the result is
infinite.
you can though define a conductance per mode T/M but
Hi,
> I modified the 1st tutorial code to include the rectangular barrier (see my
> code in [2]). I have attached the figures i got from the code
> (conductance.png and rect_trans.png). If i have understood correctly, then
> Kwant outputs the conductance depending on excitation energy. And the
>
Hello again,
Thanks for the ideas. I have fiddled around with Kwant a bit now, and I'm
trying to recreate quantum tunneling through rectangular potential barrier
(see [1] for analytical solution). I have also added a figure of the
analytical solution (rect_trans.png), which shows the transmission
Kristjan Eimre wrote:
I have a 3d electron potential landscape for a metal-vacuum
surface calculated with DFT. (More detailed info and pictures in
[1]). Can I use Kwant to calculate the transmission probability
of electrons incident on the surface?
This looks to me like Kwant's first
Hello Kristjan,
Probably you can model the vacuum as a dense square lattice making
its hopping such as to mimic free electron dispersion.
And the hopping between your material and the "vacuum" lattice must be
defined from the DFT atomic orbitals of the band you are considering.
The vacuum
