A review on non-Hermitian skin effect

The past decades have witnessed the flourishing of non-Hermitian physics in non-conservative systems, leading to unprecedented phenomena of unidirectional invisibility, enhanced sensitivity and more recently the novel topological features such as bulk Fermi arcs. Among them, growing efforts have been invested to an intriguing phenomenon, known as the non-Hermitian skin effect (NHSE). Here, we review the recent progress in this emerging field. By starting from the one-dimensional (1D) case, the fundamental concepts of NHSE, its minimal model, the physical meanings and consequences are elaborated in details. In particular, we discuss the NHSE enriched by lattice symmetries, which gives rise to unique…

• NN
  National Natural Science Foundation of China

  Award: 11625418
• NS
  Natural Science Foundation of Jiangsu Province

  Award: BK20190284
• NK
  National Key Research and Development Program of China

  Award: 2017YFA0303702