Anomalous confined electron states in graphene superlattices

Journal Article · Mon Jul 07 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4889911· OSTI ID:22303966

Anh Le, H. ^[1]; Chien Nguyen, D. ^[2]

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1. Advanced Institute for Science and Technology (AIST), Hanoi University of Science and Technology (HUST), Hanoi 10000 (Viet Nam)
2. School of Engineering Physics, HUST, Hanoi 10000 (Viet Nam)

We show that periodic scalar potentials can induce the localization of some electronic states in graphene. Particularly, localized states are found at energies outside the potential variation range and embedded in the continuum spectrum of delocalized ones. The picture of the connection of wave functions with typical symmetries defined in relevant-edge nanoribbons is employed to explain the formation of the electronic structure and to characterize/classify eigen-states in graphene superlattices.

• OSTI ID: 22303966
• Journal Information: Applied Physics Letters, Vol. 105, Issue 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EIGENSTATES
ELECTRONIC STRUCTURE
GRAPHENE
NANOSTRUCTURES
PERIODICITY
SPECTRA
SUPERLATTICES
SYMMETRY