Size quantization in planar graphene-based heterostructures: Pseudospin splitting, interface states, and excitons

Journal Article · Thu Mar 15 00:00:00 EDT 2012 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776112020094· OSTI ID:22027896

Silin, A P ^[1]

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1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)

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.

• OSTI ID: 22027896
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 114, Issue 3; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ASYMMETRY
CHARGE CARRIERS
ELECTRIC FIELDS
ENERGY GAP
ENERGY SPECTRA
EXCITONS
GRAPHITE
HETEROJUNCTIONS
INTERFACES
QUANTIZATION
QUANTUM WELLS