Hi Everyone!
I want to solve basic problem of transmission of the electron through a
potential barrier without taking into account any effects contacts. But the
influence of leads in all the examples provided in kwant documentation
definitely exists. For example, in the quantum wire case leads are set the same
way as the scattering region, that why I expect the transmission should be
obtained identically zero. This means that kwant takes into account also some
regions outside the leads e.g. bulk metal contacts.
Also I modified the quantum well example like this:
def plot_transmission(syst, energies, welldepth):
data = []
for energy in energies:
smatrix = kwant.smatrix(syst, energy, args=[-welldepth])
data.append(smatrix.transmission(1, 0))
data = np.array( data )
pyplot.figure()
pyplot.plot(energies, data)
pyplot.xlabel("Energy [t]")
pyplot.ylabel("Transmission")
pyplot.show() and in the main function make a call
plot_transmission(syst, [0.01 * i for i in range(1,100)], 0.0)
As a result some dependence on E is obtained even for the case of zero depth of
the potential whell and it is not identically zero.
So, is it possible to obtain in Kwant the transmission coefficients through the
defined in the scattering region structures which is not affected by anything
else?
Sincerely,
Jambulat
