Sorry, I made a mistake in my previous email I wrote the correction of the previous email below:
Thanks for your prompt reply Mr. Wintal. I did not calculate the conductance and obtained the G-E diagram using the transmission method introduced in the Green function class. Another method introduced in this class is conductance_matrix (), ( https://kwant-project.org/doc/1/reference/generated/kwant.solvers.common.GreensFunction.html?highlight=green%20function ) which relates the current vector to the voltage vector. Can I use this method and get to the I-V diagram? I also want to check the temperature parameter in this system and see the device's behavior under different temperatures. thanks Leo On Wed, Jul 1, 2020 at 12:48 PM Loo Joo <[email protected]> wrote: > Thanks for your prompt reply Mr. Wintal. > I did not calculate the Green function and obtained the G-E diagram using > the transmission method introduced in the Green function class. > Another method introduced in this class is conductance_matrix (), > ( > https://kwant-project.org/doc/1/reference/generated/kwant.solvers.common.GreensFunction.html?highlight=green%20function > ) > which relates the current vector to the voltage vector. > Can I use this method and get to the I-V diagram? > I also want to check the temperature parameter in this system and see the > device's behavior under different temperatures. > thanks > Leo > > On Tue, Jun 30, 2020 at 4:29 PM Xavier Waintal <[email protected]> > wrote: > >> dear Leo, >> >> If you have calculated the conductance G(E) of a 2 terminal device, >> the current I at finite voltage V is given by >> >> I = Integral dE G(E) [ f(E-mu_L) - f(E-mu_R) ] >> where mu_L and mu_R are the chemical potential of the two electrodes, >> f(E) is >> the Fermi function. mu_L - mu_R = eV where V is the voltage drop across >> the devices. >> >> Beware that this equation assumes a NON INTERACTING system and can lead >> to physically wrong results. >> (It neglects the electrostatic which becomes almost always relevant at >> finite bias). >> >> Best regards, >> Xavier >> >> >> > Le 30 juin 2020 à 13:37, <[email protected]> <[email protected]> a >> écrit : >> > >> > dear all >> > I have done my project using Kwant and I have drawn a >> conductance-energy diagram for the system. >> > The question I have is how can I get the current-voltage diagram? >> > thanks >> > Leo >> >>
