2 papers
cond-mat.mtrl-sci2026
Local expression of fractional corner charges in obstructed atomic insulators and relationship with the fractional disclination charges
Hidetoshi Wada, Shuichi Murakami
In obstructed atomic insulators, fractionally quantized charges appear at the corners of the crystals in the shapes of vertex-transitive polyhedra, and are given by the filling ano…
cond-mat.mtrl-sci2025
Theory of fractional corner charges in cylindrical crystal shapes
Hidetoshi Wada, Tiantian Zhang, Shuichi Murakami
Recent studies showed that topologically trivial insulators may have fractionally quantized corner charges due to the topological invariant called a filling anomaly. Such crystal s…