36 citations · 111 across the 9 of their papers we have counts for
9 papers · 1 filter
Symmetry indicators for topological superconductors
Seishiro Ono, Youichi Yanase, Haruki Watanabe
The systematic diagnosis of band topology enabled by the method of "symmetry indicators" underlies the recent advances in the search for new materials realizing topological crystal…
Fragile topological phases in interacting systems
Dominic V. Else, Hoi Chun Po, Haruki Watanabe
Topological phases of matter are defined by their nontrivial patterns of ground-state quantum entanglement, which is irremovable so long as the excitation gap and the protecting sy…
Many-body Chern number without integration
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado +1
The celebrated work of Niu, Thouless, and Wu demonstrated the quantization of Hall conductance in the presence of many-body interactions by revealing the many-body counterpart of t…
Unified understanding of symmetry indicators for all internal symmetry classes
Seishiro Ono, Haruki Watanabe
The interplay between symmetry and topology in electronic band structures has been one of the central subjects in condensed-matter physics. Recently, it has been getting clear that…
Space-group theory of photonic bands
Haruki Watanabe, Ling Lu
The wide-range application of photonic crystals and metamaterials benefits from the enormous design space of three-dimensional sub-wavelength structures. In this work, we study the…
Connecting higher-order topological insulators to lower-dimensional topological insulators
Akishi Matsugatani, Haruki Watanabe
In recent years, the role of crystal symmetries in enriching the variety of TIs have been actively investigated. Higher-order TIs are a new type of topological crystalline insulato…