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Bulletin of the American Physical Society

Study of correlated topological insulators in one dimension

Tsuneya Yoshida, Robert Peters, Satoshi Fujimoto, Norio Kawakami

Published Mar 6, 2014• 0 citations
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Strongly correlated fermionic systems have been one of the most studied fields in condensed matter theory. The competition between Coulomb-repulsion and kinetic energy leads to a manifold of individual phases, especially in lower dimensions. Famous examples are Luttinger liquids in one dimensions, Mott-insulators or topological phases such as spin liquids. Recently a new class of non-trivial insulators has been introduced, the fragile Mott insulator (FMI). In this paper the authors extend the concept of an FMI to the case of ring-shaped molecules and study the interplay between symmetry, strong correlations as well as strong interactions which ultimately determine the electronic structure of the system.