Hi, You have attached the transmission spectrum (not the transmission eigenvalues).
Most likely you should first try and get the correct electronic structure in your electrodes. You do not use any k-points? Why? Is the gamma point enough? Also, when experiencing these problems you should carefully examine the output of transiesta and check the convergence,perhaps charge is leaving the system. Lastly, you should also converge the number of screening layers between your device and electrodes to ensure a continuous potential. Maybe this may be the root cause. -- Kind regards Nick Papior On 29 Nov 2016 12:41, "berna uyanık" <bernauya...@gmail.com> wrote: Dear siesta users and developers, I have been using siesta4-0. I calculate Zn-Zno-Zn device. But transmission coefficients too small. The system's siesta files and transmission eigenvalues files were attached. Could you help me what is wrong? Thank you. Berna Uyanık
