5 papers
Cascade of topological phase transitions and revival of topological zero modes in imperfect double helical liquids
Anna Ohorodnyk, Chen-Hsuan Hsu
Two parallel helical edge channels hosting interacting electrons, when proximitized by local and nonlocal pairings, can host time-reversal-invariant pairs of topological zero modes…
Non-Hermitian topological superconductivity with symmetry-enriched spectral and eigenstate features
Chuo-Kai Chang, Kazuma Saito, Nobuyuki Okuma +2
We investigate a one-dimensional superconducting lattice that realizes all internal symmetries permitted in non-Hermitian systems, characterized by nonreciprocal hopping, onsite di…
On the Cutting Edge: Helical Liquids in Time-Reversal-Invariant Topological Materials
Chen-Hsuan Hsu, Jelena Klinovaja, Daniel Loss
In this perspective, we discuss the unique electronic properties of helical liquids appearing at the boundaries of time-reversal-invariant topological materials and highlight the k…
Quasi-two-dimensional spin helix and magnon-induced singularity in twisted bilayer graphene
Yung-Yeh Chang, Kazuma Saito, Chen-Hsuan Hsu
Twisted bilayer graphene exhibits prominent correlated phenomena in two distinct regimes: a Kondo lattice near the magic angle, resembling heavy fermion systems, and a triangular c…
Engineering Majorana Kramers Pairs In Synthetic High Spin Chern Insulators
Yi-Chun Hung, Chen-Hsuan Hsu, Arun Bansil
High spin-Chern-number topological phases provide a promising low-dimensional platform for realizing double-helical edge states. In this letter, we show how these edge states can h…