5 papers
Interplay of Quasiperiodic Criticality and the Non-Hermitian Skin Effect
Zhangyuan Chen, Xianqi Tong, Xiaosen Yang
Quasiperiodic lattices can host critical eigenstates, whereas nonreciprocal hopping in non-Hermitian lattices can induce non-Hermitian skin effect. In this work, we investigate loc…
Quasiperiodic Skin Criticality in an Exactly Solvable Non-Hermitian Quasicrystal
Zhangyuan Chen, Muhammad Idrees, Ying Yang +2
Critical states in quasiperiodic systems defy the conventional dichotomy between extended and localized states. In this work, we demonstrate that non-Hermiticity fundamentally resh…
Spin-orbit-driven quarter semimetals in rhombohedral graphene
Jing Ding, Hanxiao Xiang, Naitian Liu +7
Semimetals exhibit intriguing characteristics attributed to the coexistence of both electrons and holes. In rhombohedral multilayer graphene, a strong trigonal warping effect gives…
Layer-engineered quantum anomalous Hall effect in twisted rhombohedral graphene
Zhangyuan Chen, Naitian Liu, Jiannan Hua +13
Realizing programmable topological states in quantum anomalous Hall (QAH) insulators requires the ability to design and dynamically tune their topological invariant, the Chern numb…
Diverse high-Chern-number quantum anomalous Hall insulators in twisted rhombohedral graphene
Naitian Liu, Zhangyuan Chen, Jing Ding +11
Quantum anomalous Hall (QAH) insulators with high Chern number (C) enables multiple dissipationless edge channels for low-power-consumption electronics. We report the realization o…