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gaozhibin

铜虫 (正式写手)

[求助] How to calculate the static dielectric constant for two dimensional material?

Hi,  emuch users,
Recently, I want to calculate the static dielectric constant of one 2D material, according to the VASP manual,  http://cms.mpi.univie.ac.at/wiki ... nt-particle_picture

I get the MACROSCOPIC STATIC DIELECTRIC TENSOR (including local field effects in DFT) and MACROSCOPIC STATIC DIELECTRIC TENSOR IONIC CONTRIBUTION which are a second order tensor, my question is how to get the static dielectric constant? I know, for example, if I want to get the Z direction of dielectric, the second column is ok. But there exists a question, how to eliminate the contribution of vacuum?

I would appreciate it if you could give me a bit of good advise. I really hope to hear from you as soon as possible.
Best wishes!
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iamikaruk

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你要算的是真正的static dielectric constant 还是光频的dielectric constant ?vasp计算的是后者。
[img]http://osu.ppy.sh/stat2/iamikaruk-0.png[/img]
2楼2016-04-01 21:08:28
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