425 citations · 441 across the 11 of their papers we have counts for
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Resolution of Topology and Geometry from Momentum-Resolved Spectroscopies
Shaofeng Huang, Chen Fang
Extracting the complete quantum geometric and topological character of Bloch wavefunctions from experiments remains a challenge in condensed matter physics. Here, we resolve this b…
Exceptional points and spectral cusps from density-wave fluctuation
Zixi Fang, Chen Fang
We report two types of singularities that arise from fluctuations during the formation of charge- or spin-density waves. The first is the exceptional point (EP), corresponding to a…
Algebraic States in Continuum in Dimensional Non-Hermitian Systems
Ao Yang, Kai Zhang, Chen Fang
We report the existence of algebraically localized eigenstates embedded within the continuum spectrum of 2D non-Hermitian systems with a single impurity. These modes, which we term…
Real-time edge dynamics of non-Hermitian lattices
Tian-Hua Yang, Chen Fang
We derive the asymptotic forms of the Green's function at the open edges of general non-Hermitian band systems in all dimensions in the long-time limit, using a modified saddle-poi…
Tailoring Bound State Geometry in High-Dimensional Non-Hermitian Systems
Ao Yang, Zixi Fang, Kai Zhang +1
It is generally believed that the non-Hermitian effect (NHSE), due to its non-reciprocal nature, creates barriers for the appearance of impurity bound states. In this paper, we fin…
Universal non-Hermitian skin effect in two and higher dimensions
Kai Zhang, Zhesen Yang, Chen Fang
Skin effect, experimentally discovered in one dimension, describes the physical phenomenon that on an open chain, an extensive number of eigenstates of a non-Hermitian hamiltonian…
Magnetization of Two Dimensional Heavy Holes with Boundaries in a Perpendicular Magnetic Field
Cheng Fang, Zhigang Wang, Shu-Shen Li +1
The magnetization of heavy holes in III-V semiconductor quantum wells with Rashba spin-orbit coupling (SOC) in an external perpendicular magnetic field is theoretically studied. We…