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Title: Anomalous confined electron states in graphene superlattices

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.
Authors:
 [1] ;  [2] ;  [1] ;  [3]
  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)
  3. (ICSE), HUST, Hanoi 10000 (Viet Nam)
Publication Date:
OSTI Identifier:
22303966
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; EIGENSTATES; ELECTRONIC STRUCTURE; GRAPHENE; NANOSTRUCTURES; PERIODICITY; SPECTRA; SUPERLATTICES; SYMMETRY