Hello authors,
I am trying to perform an eigenchannel analysis of a graphene nanoribbon.
For that I will be using the formula :
*T(E) = ГL(E)½ GC†(E) ГR(E) GC(E) ГL(E)½ *
where *ГL(E)* is the coupling matrix between the left lead and the
conductor, *GC(E)* is the greens function matrix of the cond
Just a correction:
I am interested in finding the transmission matrix 't' from the following:
t†t = *ГL(E)½ GC†(E) ГR(E) GC(E) ГL(E)½ *
Best Regards,
Shivang
On Thu, Jun 7, 2018 at 2:23 AM, Shivang Agarwal wrote:
> Hello authors,
>
> I am trying to perform an eigenchannel analysis of a graphe
Dear Shivang,
To get the matrix Gamma you can do:
sys= sys.finalized()
lead_L = sys.leads[0]
Sigma_L= lead_L.selfenergy(energy)
Gamma_L = -2*imag(Sigma_L)
You can find the details in this answer by Joseph [1].
To get directly the transmission matrix t you can do:
t=kwa
Hi Shivang,
> Le 6 juin 2018 à 22:53, Shivang Agarwal a écrit
> :
>
> Hello authors,
>
> I am trying to perform an eigenchannel analysis of a graphene nanoribbon. For
> that I will be using the formula :
> T(E) = ГL(E)½ GC†(E) ГR(E) GC(E) ГL(E)½
> where ГL(E) is the coupling matrix between
Thanks Xavier. I now have a clearer picture.
Regards,
Shivang
On Thu, Jun 7, 2018 at 11:33 AM Xavier Waintal
wrote:
> Hi Shivang,
>
>
> Le 6 juin 2018 à 22:53, Shivang Agarwal a
> écrit :
>
> Hello authors,
>
> I am trying to perform an eigenchannel analysis of a graphene nanoribbon.
> For tha
Hi Abbout,
Thanks for swift response.
Indeed, the kwant.wavefunction module gives me a complex number. I had been
working on probability (wavefunction squared) and had overlooked the phase
part. A noob mistake.
Appreciate your help!
Shivang
On Thu, Jun 7, 2018 at 11:53 AM Abbout Adel wrote:
>
Hi,
I had one more query. Would it be possible to calculate and plot the
magnitude and phase of the complex wave function of each transmission mode
separately?
Regards,
Shivang
On Thu, Jun 7, 2018 at 8:29 PM Shivang Agarwal
wrote:
> Hi Abbout,
>
> Thanks for swift response.
> Indeed, the kwant
Hi Shivang,
The transmitted wave function transmitted in the mode m (and coming from
the mode n) is:
t_mn exp(i k_m).
>
Since you have the transmitted amplitudes and the wavenumbers k_m, you have
everything for your request.
I hope this helps.
Adel
On Fri, Jun 8, 2018 at 11:09 PM, Shivang
Hi Abbout,
I have a matrix giving me the complex wave function at each site. How do I
know which mode (m/n) do the amplitudes correspond to?
Also, I am not aware of the method to get wavenumbers k_m. Could you kindly
help me out with that as well?
Thanks for the help!
On Sun, Jun 10, 2018 at 1:4
Hi,
>
> I have a matrix giving me the complex wave function at each site. How
> do I know which mode (m/n) do the amplitudes correspond to?
Where did you get this matrix from? Is this the wavefunction of a mode
in a lead, from 'kwant.modes', or of a scattering wavefunction, from
'kwant.wave_func
Thanks a lot Joseph. That really helps a lot! I now get what I need to do.
On Mon, Jun 11, 2018 at 10:14 PM Joseph Weston
wrote:
> Hi,
>
>
> >
> > I have a matrix giving me the complex wave function at each site. How
> > do I know which mode (m/n) do the amplitudes correspond to?
>
> Where did y
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