Sorry, I made a mistake in my previous email

I wrote the correction of the previous email below:

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 (),

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 (),

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.

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 <loojoo026@gmail.com> 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 (),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.thanksLeoOn Tue, Jun 30, 2020 at 4:29 PM Xavier Waintal <xavier.waintal@cea.fr> 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, <loojoo026@gmail.com> <loojoo026@gmail.com> 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