Non-Hermitian extended midgap states and bound states in the continuum
Maria Zelenayová, PhD student at Fysikum, and her supervisor Professor Emil Bergholtz looked into localization phenomena in non-Hermitian systems that challenge traditional beliefs about states within the energy continuum and those in the gap. The understanding of non-Hermitian extended band gaps and bound states holds significant implications across various domains. In quantum mechanics, this opens up new possibilities for controlling and manipulating the properties of materials. In technology, these insights can be utilized to develop more efficient semiconductors and other advanced materials.
Their work unifies various non-Hermitian phenomena, such as the skin effect, bound states in the continuum, midgap extended states, and extended states in a continuum.
In addition to this, they provide an overview of how the quantized biorthogonal polarization describes the gap closing and emergence of boundary modes in the continuum.
More information
Non-Hermitian extended midgap states and bound states in the continuum - Applied Physics Letters
Last updated: February 5, 2024
Source: Fysikum