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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…
Topology of Disconnected Elementary Band Representations
Jennifer Cano, Barry Bradlyn, Zhijun Wang +5
Elementary band representations are the fundamental building blocks of atomic limit band structures. They have the defining property that at partial filling they cannot be both gap…
Topological quantum chemistry
Barry Bradlyn, L. Elcoro, Jennifer Cano +5
The past decade's apparent success in predicting and experimentally discovering distinct classes of topological insulators (TIs) and semimetals masks a fundamental shortcoming: out…