Jump to main content
Jump to site search

Issue 40, 2019
Previous Article Next Article

Topological flat band, Dirac fermions and quantum spin Hall phase in 2D Archimedean lattices

Author affiliations

Abstract

Materials with properties designed on-demand arise in a synergy between theoretical and experimental approaches. Here, we explore a set of Archimedean lattices, providing a guide to their electronic properties and topological phases. Within these lattices, a rich electronic structure emerges forming type-I and II Dirac fermions, topological flat bands and high-degeneracy points with linear and flat dispersions. Employing a tight-binding model with spin–orbit coupling, we characterize quantum spin Hall (QSH) phases in all Archimedean lattices. Our discussions are validated within density functional theory calculations, where we show the characteristic bands of the studied lattices arising in 2D carbon allotropes.

Graphical abstract: Topological flat band, Dirac fermions and quantum spin Hall phase in 2D Archimedean lattices

Back to tab navigation

Publication details

The article was received on 27 Aug 2019, accepted on 20 Sep 2019 and first published on 20 Sep 2019


Article type: Paper
DOI: 10.1039/C9CP04760C
Phys. Chem. Chem. Phys., 2019,21, 22344-22350

  •   Request permissions

    Topological flat band, Dirac fermions and quantum spin Hall phase in 2D Archimedean lattices

    F. Crasto de Lima, G. J. Ferreira and R. H. Miwa, Phys. Chem. Chem. Phys., 2019, 21, 22344
    DOI: 10.1039/C9CP04760C

Search articles by author

Spotlight

Advertisements