SKM 2023 – scientific programme

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O: Fachverband Oberflächenphysik

O 94: Topology and Symmetry-Protected Materials

O 94.8: Talk

Friday, March 31, 2023, 12:15–12:30, GER 38

Transfer matrix analysis of non-Hermitian interfaces — •Jacob Fauman — Max Planck Institute for the Science of Light, Erlangen, Germany

Non-Hermitian systems exhibit unique features not present in Hermitian systems, including the so-called non-Hermitian skin effect in which the modes accumulate at the surface of the system. We analyze the interface between a non-Hermitian system and a Weyl semimetal analytically using the transfer matrix method. This approach is especially well-suited to the study of spatially inhomogeneous systems, and allows for analysis of the Fermi arcs at the interface. We also consider the effect of Hermitian and non-Hermitian spectral degeneracies on the interface modes.