QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: huangshenjie on January 10, 2013, 16:21

Title: help me choose the best Poisson solver
Post by: huangshenjie on January 10, 2013, 16:21: Hi, I have built a MTJ, CoMnO/ MgO / CoMnO. However, I don't which is the best Poisson solver.
Could you tell me the proper solver? Thanks.
Title: Re: help me choose the best Poisson solver
Post by: zh on January 11, 2013, 00:19: The default "FFT" is OK for your system.
Title: Re: help me choose the best Poisson solver
Post by: huangshenjie on January 11, 2013, 02:29: Quote from: zh on January 11, 2013, 00:19
The default "FFT" is OK for your system.

Thank you very much. I still have another question about contour integral. In order to get proper result and save time, which value should I choose about real axis point density and infinitesimal?
Title: Re: help me choose the best Poisson solver
Post by: huangshenjie on January 11, 2013, 02:36: Quote from: zh on January 11, 2013, 00:19
The default "FFT" is OK for your system.

And if I insert a Cu layer between the barrier and the ferromagnetic layer, should I still choose FFT?
Title: Re: help me choose the best Poisson solver
Post by: zh on January 11, 2013, 11:45: Quote from: huangshenjie on January 11, 2013, 02:36
Quote from: zh on January 11, 2013, 00:19
The default "FFT" is OK for your system.

And if I insert a Cu layer between the barrier and the ferromagnetic layer, should I still choose FFT?
Yes.
Title: Re: help me choose the best Poisson solver
Post by: huangshenjie on January 12, 2013, 02:01: Quote from: zh on January 11, 2013, 11:45
Quote from: huangshenjie on January 11, 2013, 02:36
Quote from: zh on January 11, 2013, 00:19
The default "FFT" is OK for your system.

And if I insert a Cu layer between the barrier and the ferromagnetic layer, should I still choose FFT?
Yes.

Thank you Mr.zh. I still have another question about contour integral. In order to get proper result and save time, which value should I choose about real axis point density and infinitesimal?
Title: Re: help me choose the best Poisson solver
Post by: zh on January 12, 2013, 12:28: Please first try the use of the default values.