Non-Hermitian Weyl semimetals: Non-Hermitian skin effect and non-Bloch bulk–boundary correspondence

Abstract We investigate novel features of three-dimensional non-Hermitian Weyl semimetals, paying special attention to the unconventional bulk–boundary correspondence. use non-Bloch Chern numbers as tool obtain topological phase diagram, which is also confirmed by energy spectra from our numerical results. It shown that, in sharp contrast Hermitian systems, conventional (Bloch) correspondence breaks down caused skin effect. establish for semimetals: edge modes are determined number bulk bands. Moreover, these can manifest unidirectional motion, and their signatures consistent with Our work establishes semimetals.