What can I learn from the Real part of the macroscopic polarizability for Alpha_Re (ω) in α2D ?

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Luo Yan
Posts: 31
Joined: Fri Jun 18, 2021 10:10 am
Location: Chengdu

What can I learn from the Real part of the macroscopic polarizability for Alpha_Re (ω) in α2D ?

Post by Luo Yan » Fri Jun 24, 2022 4:04 am

Dear all,
When I have calculated the the macroscopic polarizability of 2D materials, I can obtain the imaginary part of the macroscopic polarizability, which is related to optical conductivity or absorbance.
However, what can I learn from the Real part of the macroscopic polarizability for Alpha_Re (ω) in α2D ?
Thanks a lot for your help! :P :P :P
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Luo Yan
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China

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Daniele Varsano
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Re: What can I learn from the Real part of the macroscopic polarizability for Alpha_Re (ω) in α2D ?

Post by Daniele Varsano » Fri Jun 24, 2022 8:10 am

Dear Luo Yan,
it provides you with the static polarizability of the system and its frequency dependence, from the polarizability (complex) you can extract observables (reflectance, transmittance, abosrbance...).

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/

Luo Yan
Posts: 31
Joined: Fri Jun 18, 2021 10:10 am
Location: Chengdu

Re: What can I learn from the Real part of the macroscopic polarizability for Alpha_Re (ω) in α2D ?

Post by Luo Yan » Sat Jun 25, 2022 7:41 am

Dear Daniele,
Thanks for your help. I can obatin the real and imaginary part of the macroscopic polarizability form alpha_2D(w).
Then I should extract the real and imaginary parts of the dielectric function basing on macroscopic polarizability.
At last, I can extract observables (reflectance, transmittance, abosrbance...) via the equations in below attachment from the the real and imaginary part of the dielectric function ??
Please help me to understand this process. Thank you !!
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Luo Yan
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China

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