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Three-Dimensional Real Space Invariants, Obstructed Atomic Insulators and A New Principle for Active Catalytic Sites
Yuanfeng Xu, Luis Elcoro, Guowei Li +7
Topologically trivial insulators come in two kinds: atomic, where the Wannier charge centers (WCCs) are localized on the atoms, and obstructed atomic, where the WCCs are located aw…
Topology invisible to eigenvalues in obstructed atomic insulators
Jennifer Cano, L. Elcoro, M. I. Aroyo +2
We consider the extent to which symmetry eigenvalues reveal the topological character of bands. Specifically, we compare distinct atomic limit phases (band representations) that sh…
Filling-Enforced Obstructed Atomic Insulators
Yuanfeng Xu, Luis Elcoro, Zhi-Da Song +6
Topological band theory has achieved great success in the high-throughput search for topological band structures both in paramagnetic and magnetic crystal materials. However, a sig…
General Construction and Topological Classification of All Magnetic and Non-Magnetic Flat Bands
Dumitru Călugăru, Aaron Chew, Luis Elcoro +3
Exotic phases of matter emerge from the interplay between strong electron interactions and non-trivial topology. Owing to their lack of dispersion at the single-particle level, sys…
Catalogue of Flat-Band Stoichiometric Materials
Nicolas Regnault, Yuanfeng Xu, Ming-Rui Li +11
Topological electronic flatten bands near or at the Fermi level are a promising avenue towards unconventional superconductivity and correlated insulating states. However, the relat…
Topological Materials Discovery from Crystal Symmetry
Benjamin J. Wieder, Barry Bradlyn, Jennifer Cano +8
Topological materials discovery has evolved at a rapid pace over the past 15 years following the identification of the first nonmagnetic topological insulators (TIs), topological c…