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Stability of the Dirac cone in artificial graphene formed in quantum wells: A computational many-electron study

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Original languageEnglish
Article number083014
JournalNew Journal of Physics
Issue number8
Publication statusPublished - 1 Aug 2016
Publication typeA1 Journal article-refereed


We carry out a comprehensive computational study on the stability of the Dirac cone in artificial graphene realized in nanopatterned quantum wells. Our real-space approach allows us to vary the size, shape, and positioning of the quantum dots in the hexagonal lattice. We compare the (noninteracting) single-particle calculations to density-functional studies within both local-density approximation and meta-generalized-gradient approximation. Furthermore, the density-functional results are compared against numerically precise path-integral quantum Monte Carlo calculations. As a whole, our results indicate high stability of the Dirac bands against external parameters, which is reassuring for further experimental investigations.

ASJC Scopus subject areas


  • Artificial grapheme, Dirac materials, Stability properties

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Field of science, Statistics Finland

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