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Welcome to ATK 13.8
In this video I will demonstrate how to visualize transmission spectra
with the transmission analyzer. Let's have a look
at the transmission spectrum for this nanoribbon system.
on the left you can see the k-point
averaged transmission spectrum. It's possible to display
different spin components of the transmission spectrum.
Now it shows the up components, but since this is a non polarized
system "up" and "down" are identical. For the active component
you can select different points. The minimum
is a 1.56 electron volt and you can see that the transmission
at this energy is very low. To the right is shown the K dependent
transmission spectrum for the selected energy. Since this is a 1D system
the transmission is identical for all different values of k a and k b.
Now let's perform a calculation of the transmission eigenvalues
for the selected parameters. Let's also calculate the corresponding transmission
eigenstates.
Now you can choose how to visualize the eigenstates in
the viewer. To it see more clearly
I change the iso-value to around 0.1. The transmission eigenstates are
a propagating from left to right and you can see
that once it hits the central part of nanoribbon
where the defect is part of it is reflected
and only a small part is transmitted. If I rotate it
you can see that it's the pi system which is responsible
for the transmission of the electrons. Follow the link on the screen to watch
more videos about ATK.
More features of ATK 13.8. IV-Curves Phonon calculations
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