convergence issue in BTE mobility calculation
Posted: Sun Nov 13, 2022 5:15 am
Dear Developers,
I am trying to calculate the electron and hole mobility in a 2D system. Doing the iterative_bte calculation, I found calculations are not converged even after 1000 iterations and show negative value of mobility tensor like:
-0.116797E+04 -0.266909E+04 0.189661E-12
-0.266292E+04 0.192852E+04 0.109511E-12
0.190097E-12 0.109757E-12 0.261935E-27
0.904978E+02 Max error
1.Can you please suggest a way to converge the calculation with or without a magnetic field?
2.Is there any role of fsthick on the convergence of mobility calculation? I find on the website that this value indicates the fermi surface thickness to consider self-energy calculation. But still, I am unable to understand how to take this value for a semiconductor so that convergence can be achieved.
3. The negative mobility number does not seem meaningful.
Kindly comment on the questions.
Thank You
Regards
Sumit Kukreti
Ph.D. scholar, Physics
IIT Jodhpur INDIA
I am trying to calculate the electron and hole mobility in a 2D system. Doing the iterative_bte calculation, I found calculations are not converged even after 1000 iterations and show negative value of mobility tensor like:
-0.116797E+04 -0.266909E+04 0.189661E-12
-0.266292E+04 0.192852E+04 0.109511E-12
0.190097E-12 0.109757E-12 0.261935E-27
0.904978E+02 Max error
1.Can you please suggest a way to converge the calculation with or without a magnetic field?
2.Is there any role of fsthick on the convergence of mobility calculation? I find on the website that this value indicates the fermi surface thickness to consider self-energy calculation. But still, I am unable to understand how to take this value for a semiconductor so that convergence can be achieved.
3. The negative mobility number does not seem meaningful.
Kindly comment on the questions.
Thank You
Regards
Sumit Kukreti
Ph.D. scholar, Physics
IIT Jodhpur INDIA