Size quantization in planar graphene-based heterostructures: Pseudospin splitting,interface states,and excitons |
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Authors: | P V Ratnikov A P Silin |
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Institution: | 1.Lebedev Physical Institute,Russian Academy of Sciences,Moscow,Russia |
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Abstract: | A planar quantum-well device made of a gapless graphene nanoribbon with edges in contact with gapped graphene sheets is examined.
The size-quantization spectrum of charge carriers in an asymmetric quantum well is shown to exhibit a pseudospin splitting.
Interface states of a new type arise from the crossing of dispersion curves of gapless and gapped graphene materials. The
exciton spectrum is calculated for a planar graphene quantum well. The effect of an external electric field on the exciton
spectrum is analyzed. |
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Keywords: | |
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