[Wien] Reg:LDA+U

2013-03-11 Thread Peter Blaha
If you want a non-magnetic solution with LDA+U you still need a spin-polarized 
setup,
but then can use   runsp_c_lapw -orb to constrain the spin to zero.

Am 10.03.2013 06:29, schrieb Swetarekha Ram:
 Dear Users,

   I am doing LDA+U calculation.
 I have done the spin-polarization calculation, by using the command 
 runsp_lapw.

 After that I have edited the file case.indm and case.inorb for the LDA+U 
 calculation.
 And by using the runsp_lapw -orb,
 I got the result fine.
 But I have a doubt that, is it necessary that each time we have to do the 
 spin-polarization calculation before LDA+U ?

 OR

 Can we do the LDA+U calculation, after the run_lapw ?

 --
 Swetarekha Ram,
 Research Scholar,



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-- 
-
Peter Blaha
Inst. Materials Chemistry, TU Vienna
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Tel: +43-1-5880115671
Fax: +43-1-5880115698
email: pblaha at theochem.tuwien.ac.at
-


[Wien] Reg:LDA+U

2013-03-10 Thread Swetarekha Ram
Dear Users,

 I am doing LDA+U calculation.
I have done the spin-polarization calculation, by using the command
runsp_lapw.

After that I have edited the file case.indm and case.inorb for the LDA+U
calculation.
And by using the runsp_lapw -orb,
I got the result fine.
But I have a doubt that, is it necessary that each time we have to do the
spin-polarization calculation before LDA+U ?

OR

Can we do the LDA+U calculation, after the run_lapw ?

-- 
Swetarekha Ram,
Research Scholar,
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[Wien] Reg:LDA+U

2013-03-10 Thread f.t...@pci.uzh.ch
No, you can not use run_lapw before LDA+U. runsp_lapw needs case.clmup/dn,
which are not generated by run_lapw. In general, it's not a good idea to do
spin-polarized and non-spin-polarized calculations in the same directory.
Also, LDA+U is implemented only with runsp_lapw.

F. Tran

-wien-bounces at zeus.theochem.tuwien.ac.at wrote: - 
To: wien at zeus.theochem.tuwien.ac.at, wien-owner at zeus.theochem.tuwien.ac.at
From: Swetarekha Ram 
Sent by: wien-bounces at zeus.theochem.tuwien.ac.at
List-Post: wien@zeus.theochem.tuwien.ac.at
Date: 03/10/2013 06:30AM
Subject: [Wien] Reg:LDA+U

Dear Users,

 I am doing LDA+U calculation.
I have done the spin-polarization calculation, by using the command runsp_lapw.

After that I have edited the file case.indm and case.inorb for the LDA+U 
calculation.
And by using the runsp_lapw -orb,
I got the result fine.
But I have a doubt that, is it necessary that each time we have to do the 
spin-polarization calculation before LDA+U ?

OR

Can we do the LDA+U calculation, after the run_lapw ?

-- 
Swetarekha Ram,
Research Scholar,


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Wien at zeus.theochem.tuwien.ac.at
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