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- From: xhongjun <xhongjun@mail.ustc.edu.cn>
- To: forum@abinit.org
- Subject: Re: [abinit-forum] How to get the eigenvectors of the Gamma phonon?
- Date: Tue, 23 Sep 2003 11:20:06 +0800
I use the abinit 4.1.3 code.
After examining the code,I find it may result from that anaddb.f find the Gamma block (iblok) wrongly when the system is a metal case.
I add the following code to anaddb.f at line 237,It looks like:
!Look after the Gamma Blok in the DDB
qphon(:,1)=0.0d0
qphnrm(1)=0.0d0
rfphon(1:2)=1
rfelfd(1:2)=2
if(3<=occopt.and.occopt<=7)then
rfelfd(1:2)=0
endif
rfstrs(1:2)=0
rftyp=rfmeth
call gtblk9(blkflg,blknrm,blkqpt,blktyp,iblok,mpert,msize,natom,nblok,&
& qphon,qphnrm,qtol,rfphon,rfelfd,rfstrs,rftyp)
Now it works.
I don't know whether I find the real answer.
If you know the answer,please let me know.
Regards.
xhongjun wrote:
Dear abinitioners,
I want to get the eigenvectors of phonon modes in the Gamma point.
Because abinis did not output this information,I think anaddb would do this job.I have tried to use anaddb but anaddb did not work properly:
The last ouput is "
================================================================================
Treat the first list of vectors
-begin at tcpu 0.080 and twall 0.227 sec
gtblk9 : enter gtblk9
gtblk9 : found blok number 1 agree with specifications
asria9 : imposition of the ASR for the interatomic forces.
anaddb : enter phfrq3
-begin at tcpu 0.080 and twall 0.229 sec
in anaddb with start phfrq3
",after that anaddb didn't output anything even an hour later.
ab.file contains:
anaddb.in
anaddb.out
ddb
moldyn
anaddb.in contains:
!Input file for the ifc code.
!Flags
dieflag 0 ! 2=> electronic dielectric tensor only
!Effective charges
asr 1 ! Acoustic Sum Rule. 1 => imposed asymetrically
!Eigenvectors
eivec 1
!Wavevector list number 1 (Reduced coordinates and normalization factor)
nph1l 1 ! number of phonons in list 1
qph1l 0.0 0.0 0.0 1.0
Any comments are welcome.
Best regards.
--
===================================================
HongJun Xiang
Ph.D. Candidate
Open Laboratory of Bond Selective Chemistry,
University of Science and Technology of China,
Hefei, Anhui, 230026,
People's Republic of China
Tel.: 86-551-3603748,3603418
Fax.: 86-551-3602969
===================================================
- How to get the eigenvectors of the Gamma phonon?, xhongjun, 09/22/2003
- Re: [abinit-forum] How to get the eigenvectors of the Gamma phonon?, xhongjun, 09/23/2003
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