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Xred for 2d Material such as MoS2, Be2C

Posted: Wed Mar 11, 2020 6:13 am
by wei
Hi,

I am a new user of Abinit and new to DFT calculation too. I am trying to study some 2d Materials such as monolayer of MoS2, Be2C. I am not sure how to set Xred for MoS2 and Be2C. I checked some database such as MP, but they don't have monolayer of MoS2 and Be2C, and I am not sure how to get atomic coordinate to set XRED. Does anyone know how to do it?

Thanks a lot for your help!

Wei

Re: Xred for 2d Material such as MoS2, Be2C

Posted: Mon Apr 20, 2020 8:37 am
by ebousquet
Dear Wei,
I guess you just have to put the c-cell parameter very long and set your atomic position in Cartesian (xcart or xang) coordinates to have the proper length along z (if you put the vacuum along the z direction). Xred can be used but you have to scale accordingly the z coordinates with the long c-axis.
Best wishes,
Eric

Re: Xred for 2d Material such as MoS2, Be2C

Posted: Thu Apr 30, 2020 7:04 pm
by wei
Hi, Eric,

Thanks a lot for your help!

Do you know if JMOL software is able to build 2d Materials monolayer so that I can get xcart from the software?

Thanks,
Wei

Re: Xred for 2d Material such as MoS2, Be2C

Posted: Thu Jun 04, 2020 3:19 pm
by ebousquet
I don't know if Jmol can do it but you can use the new software qAgate which is interfaced with Abinit and can do the job.
To install it, you can do:

Code: Select all

sudo add-apt-repository ppa:piti-diablotin/abiout
sudo apt-get update
sudo apt install -y qagate
Best wishes,
Eric