[Wien] ELF

Peter Blaha peter.blaha at tuwien.ac.at
Sat Oct 22 12:29:03 CEST 2022


Yes, you can do it.

PS: GGA+U is only correct when you use case.inm_tau (which you have 
done), not with the old way with case.inm_vresp !!

Am 22.10.2022 um 11:32 schrieb reyhaneh ebrahimi:
> Dear Prof. Blaha
> 
> Thank you very much for your valuable reply to me.
> 
> 
> In the next step, I would like to compare the ELF of my compound for 
> different values of Hubbard parameter (U) using PBE-GGA+U. Can I use the 
> method (which I explained in my previous Email for PBE-GGA calculation) 
> to find the effect of U on the ELF using PBE-GGA+U calculations?
> 
> According to “Re: [Wien] ELF calculation (mail-archive.com) 
> <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17524.html>” and  “Re: [Wien] ELF calculation (mail-archive.com) <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17550.html>”, it seems that WIEN2k code can not calculate the ELF for PBE-GGA+U calculations.
> 
> 
> Sincerely yours,
> 
> Reyhaneh Ebrahimi
> 
> 
> On Sat, Oct 22, 2022 at 12:33 AM Peter Blaha <peter.blaha at tuwien.ac.at 
> <mailto:peter.blaha at tuwien.ac.at>> wrote:
> 
>     In principle there are 2 ways how to calculate ELF.
> 
>     The "old" way was to calculate ELF directly in lapw0, but this leads to
>     fairly large discontinuities at RMT. This is what the old hints on the
>     mailing list refer to.
> 
>     Therefore we created a couple of years later a new script (create_elf),
>     which calculates tau, tauw and tautf separately in the desired plane
>     and
>     the script forms from these 3 datasets the ELF.
>     This is the recommended way and it seems you have done it ok.
> 
> 
>     PS: If one is new to a certain approach, usually one would first try to
>     reproduce a calculation from literature, i.e. calculate ELF and compare
>     it with the plots in literature. Only if one knows how it works, one
>     would apply it to the desired compound.
> 
>     Am 22.10.2022 um 00:09 schrieb reyhaneh ebrahimi:
>      > Dear Prof. Blaha
>      >
>      > Thank you very much for your useful and prompt reply.
>      >
>      > Please let me explain my question more clearly.
>      >
>      > I am running the wien2k version 21.1 with ubuntu Linux operating
>     system
>      > (with version 5.4.0-47-generic), Fortran compiler, fftw-3.3.8,
>      > mpich-3.2, libxc-5.0.0, and parallel_studio_xe_2020. The purpose
>     of my
>      > calculations is to calculate the ELF quantity for CeIn_3 . I
>     attached my
>      > struct file in the
>      >
>https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>
>      >
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>>”.
>      > I used PBE-GGA as the XC potential. I also selected rkmax=7.0,
>      > Gmax=16.0, and K-point=2000 (a mesh with 12 12 12 sizes) for my
>      > calculation. Then, I run the PBE-GGA calculation using the following
>      > command:
>      >
>      > runsp_lapw -p -so -in1ef -i 400 -cc 0.00001
>      >
>      > After the PBE-GGA calculation, I used the following commands in my
>      > executable folder to calculate the ELF.
>      >
>      > cp /…/SRC_templates/case.inm_tau ./CeIn3.inm_tau (I attached this
>     file
>      > in
>https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>
>      >
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>>”)
>      >
>      > cp /…/SRC_templates/case.in5 ./CeIn3.in5 (I attached this file in
>      >
>https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>
>      >
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>>”)
>      >
>      > x lapw2 -tau -p -so -up
>      >
>      > x lapw2 -tau -p -so -dn
>      >
>      > x lcore -tau -p -so -up
>      >
>      > x lcore -tau -p -so –dn
>      >
>      > x mixer -tau
>      >
>      > create_elf_lapw -up -VX_ELF
>      >
>      > The following lines are written by wien2k after the
>     create_elf_lapw -up
>      > -VX_ELF
>      >
>      > command line:
>      >
>      > ………………………………………………….
>      >
>      > Doing VX_TAU
>      >
>      > VAL changed to TOT in pbe.in5
>      >
>      > LAPW5 END
>      >
>      > 0.301u 0.016s 0:00.33 93.9% 0+0k 0+880io 0pf+0w
>      >
>      > pbe.rho_VX_TAU and pbe.rho_onedim_VX_TAU have been created
>      >
>      > Doing VX_TAUTF
>      >
>      >   LAPW0 END
>      >
>      > 9.613u 0.168s 0:02.58 378.6%    0+0k 0+12736io 0pf+0w
>      >
>      > TOT changed to VAL in pbe.in5
>      >
>      > LAPW5 END
>      >
>      > 1.987u 0.099s 0:00.57 363.1%    0+0k 0+880io 0pf+0w
>      >
>      > pbe.rho_VX_TAUTF and pbe.rho_onedim_VX_TAUTF have been created
>      >
>      > Doing VX_TAUW
>      >
>      >   LAPW0 END
>      >
>      > 9.477u 0.164s 0:02.53 380.6%    0+0k 0+12736io 0pf+0w
>      >
>      > TOT changed to VAL in pbe.in5
>      >
>      > LAPW5 END
>      >
>      > 2.002u 0.080s 0:00.57 364.9%    0+0k 0+880io 0pf+0w
>      >
>      > pbe.rho_VX_TAUW and pbe.rho_onedim_VX_TAUW have been created
>      >
>      > 0.015u 0.003s 0:00.01 100.0%    0+0k 0+320io 0pf+0w
>      >
>      > STOP create_rho
>      >
>      > pbe.rho and pbe.rho_onedim have been created for VX_ELF
>      >
>      >
>      > I attached all of my output files i.e.,
>      >
>      > CeIn3.rho
>      >
>      > CeIn3.rho_VX_TAU
>      >
>      > CeIn3.rho_VX_TAUTF
>      >
>      > CeIn3.rho_VX_TAUW
>      >
>      > CeIn3.output5
>      >
>      >   in
>      >
>https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>
>      >
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>>”.
>      >
>      > Then we plot “CeIn3.rho” using xcrysden by “render pre-Calculated
>      > Density” option in it. I attached our results “ceIn3_1” and
>     “ceIn3_2” in
>      > png format in the
>      >
>https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>
>      >
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file
>     <https://www.mediafire.com/file/xiudgtwovkhfddj/CeIn3-files.zip/file>>”.
>      >
>      > According to “[Wien] elf calculations ? (narkive.com
>     <http://narkive.com>)
>      >
>     <https://wien.zeus.theochem.tuwien.ac.narkive.com/J7NvVSMs/elf-calculations <https://wien.zeus.theochem.tuwien.ac.narkive.com/J7NvVSMs/elf-calculations>>”, should we also select 38 in “case.in0” and replace “NR2V” with “R2V” for our ELF calculations?
>      >
>      > Sincerely yours,
>      >
>      > Reyhaneh Ebrahimi
>      >
>      >
>      > On Fri, Oct 21, 2022 at 8:08 AM Peter Blaha
>     <peter.blaha at tuwien.ac.at <mailto:peter.blaha at tuwien.ac.at>
>      > <mailto:peter.blaha at tuwien.ac.at
>     <mailto:peter.blaha at tuwien.ac.at>>> wrote:
>      >
>      >     The ELF is in case.rho.  Same format as a density plot with x
>     lapw5.
>      >     Use xcrysden (--help for syntax) for plotting.
>      >
>      >     Am 21.10.2022 um 13:07 schrieb reyhaneh ebrahimi:
>      >      > Dear WIEN2K users,
>      >      >
>      >      > I would like to compare the electron localization function
>     (ELF)
>      >     of my
>      >      > compound using PBE-GGA and PBE-GGA+U. According to section
>      >     5.10.13 of
>      >      > the WIEN2k-V21.1 userguide, the ELF can be calculated
>     using the
>      >      > “create_elf _lapw” command. But when we used this command
>     after the
>      >      > PBE-GGA calculation, the following sentence is written by
>     WIEN2k
>      >     code:
>      >      >
>      >      > “can be created by: cp /……./SRC_templates/case.inm_tau; x
>     lapw2
>      >     -tau; x
>      >      > lcore -tau; x mixer -tau”
>      >      >
>      >      > Therefore, we copied “case.inm_tau” and “case.in5” from
>     our “SRC_
>      >      > templates” folder and then executed the “lapw2, lcore and
>     mixer”
>      >     with
>      >      > “-tau” switch.
>      >      >
>      >      > Then, we used the  “create_elf_lapw” command:
>      >      >
>      >      > create_elf -VX_ELF  -up
>      >      >
>      >      > Our outputs are:
>      >      >
>      >      > case.rho
>      >      >
>      >      > case.rho_VX_TAU
>      >      >
>      >      > case.rho_VX_TAUTF
>      >      >
>      >      >   case.rho_VX_TAUW
>      >      >
>      >      > Would you please help me which of the above files is the
>     output
>      >     for ELF?
>      >      >
>      >      > According “[Wien] elf calculations ? (narkive.com
>     <http://narkive.com>
>      >     <http://narkive.com <http://narkive.com>>)
>      >      >
>      >   
>       <https://wien.zeus.theochem.tuwien.ac.narkive.com/J7NvVSMs/elf-calculations <https://wien.zeus.theochem.tuwien.ac.narkive.com/J7NvVSMs/elf-calculations> <https://wien.zeus.theochem.tuwien.ac.narkive.com/J7NvVSMs/elf-calculations <https://wien.zeus.theochem.tuwien.ac.narkive.com/J7NvVSMs/elf-calculations>>>”, should we select 38 in case.in0 and replace NR2V by R2Vfor our ELF calculations, too?
>      >      >
>      >      > For PBE-GGA+U calculations, can we use the above method to
>     find the
>      >      > effect of U on the ELF? About “Re: [Wien] ELF calculation
>      >      > (mail-archive.com <http://mail-archive.com>
>     <http://mail-archive.com <http://mail-archive.com>>)
>      >      >
>      >   
>       <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17524.html <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17524.html> <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17524.html <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17524.html>>>”and “Re: [Wien] ELF calculation (mail-archive.com <http://mail-archive.com> <http://mail-archive.com <http://mail-archive.com>>) <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17550.html <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17550.html> <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17550.html <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17550.html>>>”, this seems that WIEN2k code can not calculate the ELF for PBE-GGA+U calculations. If this matter is true, would you please help me to find a way to calculate the ELF for PBE-GGA+U calculations using different values of U.
>      >      >
>      >      > About “Re: [Wien] ELF calculation (mail-archive.com
>     <http://mail-archive.com>
>      >     <http://mail-archive.com <http://mail-archive.com>>)
>      >      >
>      >   
>       <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17528.html <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17528.html> <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17528.html <https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17528.html>>>”, It seems that using CRITIC2 code we can calculate the ELF after PBE-GGA+U calculations. Is it correct? If Yes, would you please, guide me how can I calculate the ELF after PBE-GGA+U calculationsin WIEN2k code using critic2 code?
>      >      >
>      >      > Thank you very much,
>      >      >
>      >      > Sincerely yours,
>      >      >
>      >      > Reyhaneh Ebrahimi
>      >      >
>      >      >
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>      >     Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060
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