Fig. 1: Schematic representation of a two-dimensional Hatano–Nelson lattice.
From: Self-trapping and skin solitons in two-dimensional non-Hermitian lattices
The arrows represent the asymmetric couplings: \({e}^{{h}_{x}}\) and \({e}^{-{h}_{x}}\) along the nx-direction, and \({e}^{{h}_{y}}\) and \({e}^{-{h}_{y}}\) along the ny-direction. The figure identifies the four geometrically distinct corners of the lattice, labeled as (A), (Bx), (By), and (C). The spatial distribution of four indicative linear eigenmodes, for a case with hx = hy, is included as an inset.
