[Pw_forum] Fwd: Raman result wrong, intensity at 0.0 cm-1 is

xirainbow nkxirainbow at gmail.com
Tue Jun 18 02:32:18 CEST 2013


Dear Xue  Yong:
         The frequencies of the first six modes are zero. However, I
did not find translation modes in the eigenvector of the first six
modes. I guess the non-zero Raman intensity is related with it.

On Tue, Jun 18, 2013 at 4:30 AM, Yong Xue <yongx837 at gmail.com> wrote:
>
> Dear xirainbow (nkxirainbow at gmail.com)
>
> Sorry for the late reply as I had some problem with my account several days
> ago.
> Here are the mode.
> [Molden Format]
> [FREQ]
>     0.00
>     0.00
>     0.00
>     0.00
>     0.00
>     0.00
>   634.63
>   634.63
>   634.63
>   819.64
>   819.64
>  2524.20
>  2546.54
>  2546.54
>  2546.54
> [FR-COORD]
>    Si          0.00000        0.00000        0.00000
>    H           1.54202        1.54202        1.54202
>    H          -1.54202       -1.54202        1.54202
>    H          -1.54202        1.54202       -1.54202
>    H           1.54202       -1.54202       -1.54202
> [FR-NORM-COORD]
>  vibration     1
>    0.00078   0.00332   0.06405
>   -0.25495   0.23274   0.09036
>   -0.26389   0.24168   0.03774
>    0.26545  -0.22610  -0.43004
>    0.25651  -0.23504   0.55814
>  vibration     2
>    0.19059   0.04544  -0.10557
>    0.42670  -0.21755  -0.07869
>   -0.16975   0.37891  -0.13246
>    0.55094   0.30844  -0.20293
>   -0.04551  -0.28802  -0.00822
>  vibration     3
>    0.13959  -0.28587   0.14499
>    0.11628  -0.53070   0.41314
>    0.04587  -0.46029  -0.12315
>    0.23331  -0.04104   0.29610
>    0.16290  -0.11145  -0.00612
>  vibration     4
>   -0.14867  -0.20599  -0.24206
>   -0.17210  -0.20740  -0.21722
>   -0.40949   0.02999  -0.26690
>    0.11215  -0.20458  -0.50147
>   -0.12525  -0.44197   0.01734
>  vibration     5
>    0.09114  -0.02012  -0.06924
>   -0.21741   0.40640  -0.18721
>    0.43407  -0.24508   0.04874
>   -0.25178  -0.44664  -0.15283
>    0.39970   0.20483   0.01436
>  vibration     6
>   -0.00483   0.03661  -0.03056
>   -0.32588  -0.12775   0.45485
>   -0.17438  -0.27925  -0.51598
>    0.16472   0.20098  -0.03575
>    0.31622   0.35247  -0.02538
>  vibration     7
>    0.01862  -0.03413   0.04143
>   -0.10205   0.46512  -0.34732
>   -0.41581   0.15135  -0.22988
>    0.15640   0.01034  -0.08886
>   -0.15736   0.32410  -0.48833
>  vibration     8
>    0.00106  -0.04361  -0.03640
>   -0.31038   0.16997   0.09246
>   -0.03471   0.44564   0.41466
>    0.01989   0.43758   0.42272
>    0.29556   0.16191   0.08440
>  vibration     9
>   -0.05367  -0.01271   0.01365
>    0.37742  -0.06301  -0.34643
>    0.27402  -0.16641   0.15622
>    0.47364   0.24002  -0.25021
>    0.37024   0.34342   0.06000
>  vibration    10
>    0.00000   0.00000   0.00000
>   -0.31074  -0.07393   0.38467
>    0.31074   0.07393   0.38467
>    0.31074  -0.07393  -0.38467
>   -0.31074   0.07393  -0.38467
>  vibration    11
>    0.00000   0.00000   0.00000
>    0.26478  -0.40150   0.13672
>   -0.26478   0.40150   0.13672
>   -0.26478  -0.40150  -0.13672
>    0.26478   0.40150  -0.13672
>  vibration    12
>    0.00000   0.00000   0.00000
>    0.28868   0.28868   0.28868
>   -0.28868  -0.28868   0.28868
>   -0.28868   0.28868  -0.28868
>    0.28868  -0.28868  -0.28868
>  vibration    13
>   -0.01650   0.02841   0.02284
>   -0.26053  -0.24431  -0.24632
>    0.07421   0.09043  -0.07192
>    0.15573  -0.15143   0.16994
>    0.49047  -0.48617  -0.48818
>  vibration    14
>   -0.01068  -0.02774   0.02678
>    0.08143   0.07527   0.09496
>    0.47391   0.46775  -0.46809
>   -0.32512   0.31125  -0.31159
>    0.06736  -0.08124  -0.06154
>  vibration    15
>    0.03485   0.00495   0.01903
>   -0.41844  -0.42924  -0.42416
>   -0.13965  -0.15045   0.15910
>   -0.34589   0.36027  -0.35161
>   -0.06710   0.08148   0.08656
>
>  Date: Thu, 23 May 2013 21:39:24 +0800
> From: xirainbow <nkxirainbow at gmail.com>
> Subject: Re: [Pw_forum] Raman result wrong,     intensity at 0.0 cm-1 is
>         not zero.
> To: PWSCF Forum <pw_forum at pwscf.org>
> Message-ID:
>         <CABBv2WLTYyoix0yHMbrhcy4-KQ8RooYim13EAu=BFM_YtF1Tiw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Dear Yong:
>                 Can you give the eigenvectors of  the translation and
> rotation modes ?
>
> On Thu, May 23, 2013 at 2:31 AM, Yong Xue <yongx837 at gmail.com> wrote:
>
>> Dear All
>>
>> I have calculated both raman and IR spectrum for SiH4 as given in the
>> handson tutorial as well as my own system for my own system composed by C
>> and O atoms only.
>>  Here is the input for nm
>>
>> Normal modes for SiH4
>>
>> &inputph
>>
>> tr2_ph=1.0d-14,
>>
>> prefix='sih4',
>>
>> amass(1)=28.086,
>>
>> amass(2)=1.008,
>>
>> outdir='./scratch/',
>>
>> epsil=.true.,
>>
>> trans=.true.,
>>
>> asr=.true.
>>
>> lraman=.true.
>>
>> fildyn='sih4.dyn'
>>
>> /
>>
>> 0.0 0.0 0.0
>> and then in for ir
>>
>> &input fildyn='sih4.dyn', asr='zero-dim' /
>> .
>>
>> here is the output:
>>
>> # mode [cm-1] [THz] IR Raman depol.fact
>>
>> 1 0.00 0.0000 0.0000 0.0154 0.7500
>>
>> 2 0.00 0.0000 0.0000 0.0884 0.7500
>>
>> 3 0.00 0.0000 0.0000 0.1187 0.7500
>>
>> 4 0.00 0.0000 0.0000 0.1189 0.7500
>>
>> 5 0.00 0.0000 0.0000 0.0412 0.7500
>>
>> 6 0.00 0.0000 0.0000 0.0090 0.7500
>>
>> 7 634.63 19.0257 1.0901 1.1141 0.7500
>>
>> 8 634.63 19.0257 1.0901 1.1141 0.7500
>>
>> 9 634.63 19.0257 1.0901 1.1141 0.7500
>>
>> 10 819.64 24.5723 0.0000 8.4695 0.7500
>>
>> 11 819.64 24.5723 0.0000 8.4695 0.7500
>>
>> 12 2524.20 75.6735 0.0000 267.0320 0.0000
>>
>> 13 2546.54 76.3432 3.3785 81.6286 0.7500
>>
>> 14 2546.54 76.3432 3.3785 81.6286 0.7500
>>
>> 15 2546.54 76.3432 3.3785 81.6286 0.7500
>> .
>>
>>
>> # mode [cm-1] [THz] IR Raman depol
>>
>> 1 0.00 0.0000 0.0000 15.6747 0.0716
>>
>> 2 0.00 0.0000 0.0000 0.7718 0.1430
>>
>> 3 0.00 0.0000 0.0000 0.1764 0.1189
>>
>> 4 0.00 0.0000 0.0000 0.4255 0.1622
>>
>> 5 0.00 0.0000 0.0000 1.5205 0.6017
>>
>> 6 0.00 0.0000 0.0000 5.1010 0.3780
>>
>> 7 358.03 10.7335 0.2584 1.0997 0.7492
>>
>> 8 492.33 14.7598 0.8213 11.7392 0.0331
>>
>> 9 626.56 18.7838 2.0445 5.0328 0.0397
>>
>> 10 740.99 22.2145 19.5106 7.7263 0.0625
>>
>> 11 834.76 25.0256 2.7362 1.6688 0.6909
>>
>> 12 878.99 26.3514 9.5905 2.4451 0.7100
>>
>> 13 913.65 27.3904 32.8439 0.2926 0.0616
>>
>> 14 923.23 27.6778 39.7587 2.1247 0.6109
>>
>> 15 997.29 29.8981 6.8952 6.7520 0.2172
>>
>> 16 1054.03 31.5990 1.6671 0.9369 0.7237
>>
>> 17 1070.32 32.0875 11.7048 3.5030 0.7498
>>
>> 18 1097.04 32.8883 2.0314 3.0010 0.7119
>>
>>
>> Thanks in advance
>>
>> Xue
>>
>>
>>
>>
>> --
>> Ms. Xue  Yong(??)
>> Department of Physics and Engineering Physics
>> University of Saskatchewan
>> 116 Science Place
>> Saskatoon, SK S7N 5E2
>> Canada
>> Tel: +1 306 261 2369
>>
>> _______________________________________________
>> Pw_forum mailing list
>> Pw_forum at pwscf.org
>> http://pwscf.org/mailman/listinfo/pw_forum
>>
>
>
>
> --
> Ms. Xue  Yong(雍雪)
> Department of Physics and Engineering Physics
> University of Saskatchewan
> 116 Science Place
> Saskatoon, SK S7N 5E2
> Canada
> Tel: +1 306 261 2369
>
>
>
> --
> Ms. Xue  Yong(雍雪)
> Department of Physics and Engineering Physics
> University of Saskatchewan
> 116 Science Place
> Saskatoon, SK S7N 5E2
> Canada
> Tel: +1 306 261 2369
>
> _______________________________________________
> Pw_forum mailing list
> Pw_forum at pwscf.org
> http://pwscf.org/mailman/listinfo/pw_forum



-- 
____________________________________
Hui Wang
School of physics, Fudan University, Shanghai, China




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