Optical Absorption by Interlayer Density Excitations in Bilayer Graphene | Zendy

Tsuneya Ando | Zendy; Mikito Koshino | Zendy

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Optical Absorption by Interlayer Density Excitations in Bilayer Graphene

Author(s) -

Tsuneya Ando,

Mikito Koshino

Publication year - 2009

Publication title -

journal of the physical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.76

H-Index - 139

eISSN - 1347-4073

pISSN - 0031-9015

DOI - 10.1143/jpsj.78.104716

Subject(s) - depolarization , bilayer graphene , polarization (electrochemistry) , materials science , electric field , condensed matter physics , graphene , excited state , conduction band , bilayer , perpendicular , physics , atomic physics , membrane , nanotechnology , electron , chemistry , medicine , biochemistry , quantum mechanics , endocrinology , geometry , mathematics

The optical absorption spectrum for light with electric field perpendicular to a bilayer graphene is shown to be quite different from that for parallel polarization. This arises partly from the difference in the selection rule and from the important depolarization effect due to induced polarization. The depolarization effect is most prominent for the sharp transition between the lowest to the first excited conduction band, which are almost parallel to each other.

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