X grid not uniform

Concerns issues with computing quasiparticle corrections to the DFT eigenvalues - i.e., the self-energy within the GW approximation (-g n), or considering the Hartree-Fock exchange only (-x)

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HIMANIM
Posts: 21
Joined: Tue Jan 31, 2017 12:12 pm

X grid not uniform

Post by HIMANIM » Mon Feb 06, 2017 11:24 am

Dear sir,

I have used 5x5x5 k mesh grid for bulk MoS2 simulation in quantum espresso which is providing uniform grid when doing yambo calculations but same k mesh grid is not generating uniform k mesh grid for monolayer MoS2. I have also used force_symmorphic= true.
What should I do in order to make the X grid uniform for yambo calculations?

Regards,
Himani Mishra
RSE2016002
IIIT Allahabad

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amolina
Posts: 135
Joined: Fri Jul 15, 2011 11:23 am
Location: Valencia, Spain
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Re: X grid not uniform

Post by amolina » Mon Feb 06, 2017 12:59 pm

Dear Himanim,
In principle QE should be able to generate uniform grid for monolayer MoS2. In any case, for monolayer MoS2 you should use a 2D Brillouin zone, that is, a 5x5x1, 6x6x1, and so on. In case it doesn't work, can you upload the output of QE and yambo?
Alejandro Molina-Sánchez
Institute of Materials Science (ICMUV)
University of Valencia, Spain

HIMANIM
Posts: 21
Joined: Tue Jan 31, 2017 12:12 pm

Re: X grid not uniform

Post by HIMANIM » Mon Feb 13, 2017 7:36 am

Dear Sir,
I have done all the calculations again with 12x12x1 k mesh but still getting non uniform grid in yambo. I have attached the yambo report fiile after initialisation. Please tell me where is the mistake.?
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HIMANIM
Posts: 21
Joined: Tue Jan 31, 2017 12:12 pm

Re: X grid not uniform

Post by HIMANIM » Mon Feb 13, 2017 7:53 am

These are the QE input files.
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