Drude-Lorentz Model, distinct plasma modes
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burkzdemir
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- Joined: Tue Sep 09, 2014 7:57 pm
Drude-Lorentz Model, distinct plasma modes
Why yambo only uses single plasmon frequency instead of multiple numbers of plasma modes? For example graphite and graphene has two distinct modes.
Burak Ozdemir
Post-doc,
University of Modena and Reggio Emilia, Italy
Post-doc,
University of Modena and Reggio Emilia, Italy
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Daniele Varsano
- Posts: 4198
- Joined: Tue Mar 17, 2009 2:23 pm
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Re: Drude-Lorentz Model, distinct plasma modes
Dear Burak,
the Drude model it is used to take into account intra-bands transitions in the dielectric function of metals, while inter-band transitions are taken into account at different level of theory (RPA, RPA+Local Field, BSE etc.).
You can find details in the PhD Thesis of Andrea Marini.
If you wish to implement other approximations in the code you are welcome.
Best,
Daniele
the Drude model it is used to take into account intra-bands transitions in the dielectric function of metals, while inter-band transitions are taken into account at different level of theory (RPA, RPA+Local Field, BSE etc.).
You can find details in the PhD Thesis of Andrea Marini.
If you wish to implement other approximations in the code you are welcome.
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/
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/