22 citations · 67 across the 12 of their papers we have counts for
5 papers · 1 filter
Exceptional second-order topological insulators
Yutaro Tanaka, Daichi Nakamura, Ryo Okugawa +1
Point-gap topological phases of non-Hermitian systems exhibit exotic boundary states that have no counterparts in Hermitian systems. Here, we develop classification of second-order…
-theory classification of Wannier localizability and detachable topological boundary states
Ken Shiozaki, Daichi Nakamura, Kenji Shimomura +2
A hallmark of certain topology, including the Chern number, is the obstruction to constructing exponentially localized Wannier functions in the bulk bands. Conversely, other types…
Non-Hermitian Origin of Detachable Boundary States in Topological Insulators
Daichi Nakamura, Ken Shiozaki, Kenji Shimomura +2
While topology can impose obstructions to exponentially localized Wannier functions, certain topological insulators are exempt from such Wannier obstructions. The absence of the Wa…
Non-Hermitian Topology in Hermitian Topological Matter
Shu Hamanaka, Tsuneya Yoshida, Kohei Kawabata
Non-Hermiticity gives rise to distinctive topological phenomena absent in Hermitian systems. However, connection between such intrinsic non-Hermitian topology and Hermitian topolog…
Multifractality of many-body non-Hermitian skin effect
Shu Hamanaka, Kohei Kawabata
The non-Hermitian skin effect, anomalous localization of an extensive number of eigenstates induced by nonreciprocal dissipation, plays a pivotal role in non-Hermitian topology and…