Re: [Wien] Optic within GGA for correlated electron systems

2013-12-08 Thread Peter Blaha

This recommendation has nothing to do with physics, but with computational
details. For metals (all systems which do not have a gap) the tetrahedral
method including "Blöchl-corrections" (quadratic contributions) may lead to
"negative occupations".
While this is ok for the normal scf cycle, joint may not understand this 
properly
and your optic may be affected.

Am 07.12.2013 22:31, schrieb ali ghafari:

Dear Prof. Blaha and Users

for calculations of optic properties (page 157 of UG), in the metalic system we should 
put "TETRA = 101".
As you know GGA functional fails to find a gap for correlated electron systems 
and it predics a metallic behavior.
My question is, should we put "TETRA = 101" for the correlated electron systems?
Best Regards?

Ali


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Re: [Wien] lapwdm program with B3Pw91 functional

2013-12-08 Thread Peter Blaha

Maybe you forgot to add   -so  for the second calculation ?

Without spin.orbit, your orbital moment will always be zero (except that a 
local potential
like LDA+U or EECE may introduce under certain conditions an artificial
orbital moment).

Am 08.12.2013 08:31, schrieb Majid Yazdani:

Dear Prof. Tran
Thanks for your help.
I have problem with the case with alpha=0.1
when I use (l,s)-index=2 to calculate the spin contribution I drive good result
[yazdani@cm6 case2]$ cat case2.ineece
-9.0  2   emin natom
1 1 3 iatom nlorb lorb
2 1 3 iatom nlorb lorb
HYBR  HYBR / EECE mode
0.1  amount of exact exchange
[yazdani@cm6 case2]$
[yazdani@cm6 case2]$ cat case2.indmc
-9.0
1
1 4 0,1,2,3
1 2
[yazdani@cm6 case2]$ x lapwdm -up -p -so -c

[yazdani@cm6 case2]$ cat case2.scfdmup
  Spin-polarized + s-o calculation, M||  1.000  1.000  1.000
   Calculation of , X=c*Xr(r)*Xls(l,s)
   Xr(r)=   I
   Xls(l,s) = S(dzeta)
   c=  1.0
   atom   Lup  dn total
:XOP001  0 0.49010 0.0 0.49007 0.0
:XOP001  1 0.0 0.0 0.0 0.0
:XOP001  2 2.49998-2.49998 0.0 0.0
:XOP001  3 0.0 0.0 0.0 0.0
[yazdani@cm6 case2]$
[yazdani@cm6 case2]$ grepline :MMI001 "case2.scf" 1
in  1 files:
case2.scf::MMI001: MAGNETIC MOMENT IN SPHERE   1=0.98485
[yazdani@cm6 case2]$

but when I chenge the (l,s)-index to 3 to drive the Orb contribution
[yazdani@cm6 case2]$ cat case2.indmc
-9.0
1
1 4 0,1,2,3
1 3
[yazdani@cm6 case2]$x lapwdm -up -p -so -c
[yazdani@cm6 case2]$ cat case2.scfdmup
  Spin-polarized + s-o calculation, M||  1.000  1.000  1.000
   Calculation of , X=c*Xr(r)*Xls(l,s)
   Xr(r)=   I
   Xls(l,s) = L(dzeta)
   c=  1.0
   atom   Lup  dn total
:XOP001  0 0.0 0.0 0.0 0.0
:XOP001  1 0.0 0.0 0.0 0.0
:XOP001  2 0.0 0.0 0.0 0.0
:XOP001  3 0.0 0.0 0.0 0.0
[yazdani@cm6 case2]$

[yazdani@cm6 case2]$ grepline :ORB001 "case2.scf" 1
in  1 files:
case2.scf::ORB001:  ORBITAL MOMENT: -0.30718 -0.30718 -0.30718 PROJECTION ON M 
-0.53207
[yazdani@cm6 case2]$
So I thinks that SCF and case.indmc are true.
please help me
thanks
M. Yazdani

/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

Majid Yazdani Kachoei,

Department of Physics, Faculty of Science,

University of Isfahan (UI), Hezar Gerib Avenue,

81744 Isfahan, Iran.





On Sun, Dec 8, 2013 at 5:57 AM, Majid Yazdani mailto:yk.ma...@gmail.com>> wrote:

I'm sorry
It's a mistake in writing.
I also check my calculations with (l,s)-index=2 to calculate the spin 
contribution. the spin contribution is not zero. but the orb contribution is 
zero with (l,s)-index=3



On Sat, Dec 7, 2013 at 5:34 PM, mailto:t...@theochem.tuwien.ac.at>> wrote:

case1.indmc and case2.indmc are not the same: "1 2" versus "1 3" in the
4th line.



On Sat, 7 Dec 2013, Majid Yazdani wrote:

Dear  Prof. Tran
thanks for your reply
 > 1) you are running the two SCF calculations with the same and 
proper
case.indmc
 > In brief, make sure that case.indmc is always correct.
I checked the case.indmc. this file is same  for two calculations( 
alpha=0.2 and alpha=0.1).
[yazdani@case1]$ cat case1.ineece
-9.0  2   emin natom
1 1 3 iatom nlorb lorb
2 1 3 iatom nlorb lorb
HYBR  HYBR / EECE mode
0.2  amount of exact exchange
[yazdani@cm6 ]$
[yazdani@cm6 case1]$ cat case1.indmc
-9.0
1
1 4 0,1,2,3
1 2
[yazdani@cm6 case1]$
[yazdani@cm6 case2]$ cat case2.ineece
-9.0  2   emin natom
1 1 3 iatom nlorb lorb
2 1 3 iatom nlorb lorb
HYBR  HYBR / EECE mode
0.1  amount of exact exchange
[yazdani@cm6 case2]$
[yazdani@cm6 case2]$ cat case2.indmc
-9.0
1
1 4 0,1,2,3
1 3
[yazdani@cm6 case2]$
 > 2) you modified case.indmc and not case.indm since apparently 
your
calculation is complex (-c), which means that this is case.indmc
which is read by WIEN2k
I run the lapwdm similar to the log file for both
that is:
Sat Aug 31 09:46:29 IRDT 2013> (x) lapwdm -up -p -so -c



I also cheked other calculation that it's structure is different 
(but only in the lattice parameter namely the original structure is pressured)  
and see this
problem again.

struct file is same for both alpha=0.1 and 0.2.


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