choice of circular polarized light

Deals with issues related to computation of optical spectra, in RPA (-o c) or by solving the Bethe-Salpeter equation (-o b). Includes local field effects, excitons, etc.

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choice of circular polarized light

Postby sitangshu » Sat Feb 25, 2017 7:28 am

Dear Sir,

How should I choose for a left/right circularly polarized light ?
Is this related to setting the flag on : LongDrXp = 1.00000,0.00000,0.00000 for left circularly polarized light (for ppa computation)?


With regards,
Sitangshu
Sitangshu Bhattacharya
Indian Institute of Information Technology-Allahabad
India
Web-page: http://profile.iiita.ac.in/sitangshu/
Institute: http://www.iiita.ac.in/
sitangshu
 
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Re: choice of circular polarized light

Postby Daniele Varsano » Sat Feb 25, 2017 8:35 am

Dear Sitangshu,
please try to post your questions in the appropriate subforum, this post is not related to the yambo-py interface.

Th variables LongDirXs, LongDirXd, LongDirXp, (BLongDir in BSE) indicates the direction of the electric field (polarization), "s" is for the static screening, "d" for the dynamical screening, "p" for the PP approximation etc.
Setting this variable you can choose a direction of the field, the polarization will be linear and not circular.

Best,

Daniele
Dr. Daniele Varsano
S3-CNR Institute of Nanoscience and MaX Center, Italy
MaX - Materials design at the Exascale
http://www.nano.cnr.it
http://www.max-centre.eu/
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Daniele Varsano
 
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Re: choice of circular polarized light

Postby sitangshu » Sun Feb 26, 2017 8:49 am

Thanks Daniele,

This is very helpful..

Regards,
Sitangshu
Sitangshu Bhattacharya
Indian Institute of Information Technology-Allahabad
India
Web-page: http://profile.iiita.ac.in/sitangshu/
Institute: http://www.iiita.ac.in/
sitangshu
 
Posts: 93
Joined: Thu Jan 05, 2017 8:08 am


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