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Carrier doping in VASP

Posted: Thu Jul 26, 2018 12:56 pm
by c@chakravarty
Dear all,
I want to calculate the effect of carrier (electron and hole) doping on the band structure of a 1D metal-organic framework. From vasp manual, I found that NELECT tag should be introduced in the INCAR file.
1. I would like to know whether any other additional flag should be introduced or not?
2. How can I calculate the carrier concentration?

I am looking forward to your answer.

Thanks in advance

with best regards
C Chakravarty

Re: Carrier doping in VASP

Posted: Fri Jul 27, 2018 9:33 am
by admin
if the cell is cubic, you can also include dipol corrections to improve convergence (LDIPOL)
the carrier concentration is obtained from the number of carriers per supercell, ie. you have to
vary the size of your supercell to obtain different carrier concentrations

Re: Carrier doping in VASP

Posted: Sat Jul 28, 2018 11:27 am
by c@chakravarty
Thank you for prompt reply.

Re: Carrier doping in VASP

Posted: Mon Jul 30, 2018 10:20 pm
by shash
admin wrote:if the cell is cubic, you can also include dipol corrections to improve convergence (LDIPOL)
the carrier concentration is obtained from the number of carriers per supercell, ie. you have to
vary the size of your supercell to obtain different carrier concentrations
Hi.
On a related note, I had a question regarding how I could change the number of carriers using a constrained DFT implementation in VASP? I realized that NELECT may not be as physical as constrained DFT.