3 papers
cond-mat.mes-hall2020
Impurity induced scale-free localization
Linhu Li, Ching Hua Lee, Jiangbin Gong
This work develops a full framework for non-Hermitian impurity physics in a non-reciprocal lattice, with PBCs, OBCs and even their interpolations being special cases across a whole…
cond-mat.mes-hall2019
Geometric classification of non-Hermitian topological systems through the singularity ring
Linhu Li, Ching Hua Lee, Jiangbin Gong
This work unveils how geometric features of two-band non-Hermitian Hamiltonians can completely classify the topology of their eigenstates and energy manifolds. Our approach general…
cond-mat.mes-hall2018
Hybrid higher-order skin-topological modes in non-reciprocal systems
Ching Hua Lee, Linhu Li, Jiangbin Gong
Higher-order phases are characterized by corner or hinge modes that arise due to the interesting interplay of localization mechanisms along two or more dimensions. In this work, we…