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- From: Paul Fons <paul-fons@aist.go.jp>
- To: forum@abinit.org
- Subject: Ultrasoft pseudopotential generation
- Date: Wed, 30 Aug 2006 19:09:18 +0900
I have been attempting to generate PAW pseudopotentials both by atompaw and Vanderbilt's code. I have not really gotten that far. I tried first to use Vanderbilt's code because I have a set of verified parameters for the uspp entry, however, I am getting a different value for total energy (and the final USPS I get says Sb has a positive free energy -- which I am quite sure it doesn't!). As a start, I thought I would ask if anyone who has experience with such things can suggest something obvious. Here are the PS reports . The first is the one I am attempting to copy and the second is the report from my attempt to run the patched runatom. I thought I would add that the non-local core correction is specified as being off in my input file (as in the parameters I am trying to copy), however, the runatom.x code turns it on internally. This energy I take it is just the sum over the valence orbitals minus the Hartree and exchange terms (or from rwsubs.f etot=etot-ehar+emvxc). My atomic eigenvalues look fine (very close to the NIST page for the same element) ... any ideas?
Source:
============================================================
| pseudopotential report: version 7.3.2 date 7-31-2001 |
------------------------------------------------------------
| Sb PBE 96 exchange-corr |
| z = 51. zv = 5. exfact = 5.00000 |
| etot = -10.80010 |
| index orbital occupation energy |
| 1 500 2.00 -0.94 |
| 2 510 3.00 -0.35 |
| keyps = 3 ifpcor = 0 |
| rinner = 1.60 for L= 1 |
| rinner = 1.60 for L= 2 |
| rinner = 1.60 for L= 3 |
| new generation scheme: |
| nbeta = 4 kkbeta = 643 rcloc = 2.0000 |
| ibeta l epsilon rcut |
| 1 0 -0.94 2.00 |
| 2 0 0.50 2.00 |
| 3 1 -0.35 2.00 |
| 4 1 0.50 2.00 |
| lloc = 2 eloc = 0.450 |
| ifqopt = 3 nqf = 8 qtryc = 10.000 |
| all electron calculation used koelling-harmon equation |
| ************logarithmic mesh************ |
============================================================
My attempt
============================================================
| pseudopotential report: version 7.3.5 date 8-29-2006 |
------------------------------------------------------------
| antimony (f-loc) PBE - GGA exchange-corr |
| z = 51.00 zv = 5.00 exfact = 5.00000 |
| etot = -33.12046 |
| index orbital occupation energy |
| 1 500 2.00 -0.94 |
| 2 510 3.00 -0.35 |
| keyps = 3 ifpcor = 1 rpcor = 1.44000 |
| rinner = 1.60 for L= 1 |
| rinner = 1.60 for L= 2 |
| rinner = 1.60 for L= 3 |
| new generation scheme: |
| nbeta = 4 kkbeta = 647 rcloc = 2.0000 |
| ibeta l epsilon rcut iptype |
| 1 0 -0.94 2.00 2 |
| 2 0 0.50 2.00 2 |
| 3 1 -0.35 2.00 2 |
| 4 1 0.50 2.00 2 |
| npf = 8 ptryc = 10.000 |
| lloc = 2 eloc = 0.450 |
| ifqopt = 3 nqf = 8 qtryc = 10.000 |
| all electron calculation used koelling-harmon equation |
| ************logarithmic mesh************ |
============================================================
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- Ultrasoft pseudopotential generation, Paul Fons, 08/30/2006
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