[Pw_forum] tefield vs lelfield: physics of gated graphene

Christoph Wolf wolf.christoph at qns.science
Sun Feb 4 13:04:36 CET 2018

Dear all,

I was wondering which approach would be better suited to describe an efield
applied across a 2D system with surface normal in z direction. Judging from
the docs both can be used to apply a field but I am curious if one has an
advantage over the other. I further found the "gatefield" example in qe 6.2
and I am curious if that would be favorable over above.

The "goal" is to see if the band-structure/absorption spectrum modulation
by an external electric field can be modeled with pwscf.

Thanks in advance for you insights!


Postdoctoral Researcher
Center for Quantum Nanoscience, Institute for Basic Science
Ewha Womans University, Seoul, South Korea
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