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Graphene

Posted: Fri Apr 26, 2013 6:54 am
by lalitha
Im working in Monolayer graphene.

In graphene supercell, two sheets are separated by 15 ang. Is it correct using two sheets in a unit cell, or need to build single sheet in a unitcell. And, My band structure for the graphene supercell doesnot give as reported.

For that what shall i do?

Thank You

Graphene

Posted: Fri Apr 26, 2013 11:50 am
by admin
Each of the two sheets separated by 15A behaves as a single sheet. It is therefore enough to work with just a single sheet. The band-structure of a supercell is not identical with that of the irreducible cell because of the band folding.

Graphene

Posted: Mon Apr 29, 2013 11:35 am
by lalitha
Thank You very much sir