Light-driven Lifshitz transitions in non-Hermitian multi-Weyl semimetals
Debashree Chowdhury, Ayan Banerjee, Awadhesh Narayan
Abstract
Non-Hermitian topological systems are the newest additions to the growing field of topological matter. In this work, we report the light-driven exceptional physics in a multi-Weyl semimetal. The driving is not only a key ingredient to control the position of the exceptional contours (ECs); light also has the ability to generate new ECs. Interestingly, we also demonstrate topological charge distribution and Lifshitz transition, which are controllable by the driving field in such generated ECs. Our findings present a promising platform for the manipulation and control over exceptional physics in non-Hermitian topological matter.
Topics & Concepts
Hermitian matrixTopological quantum numberTopology (electrical circuits)PhysicsField (mathematics)Position (finance)Theoretical physicsQuantum mechanicsMathematicsPure mathematicsEconomicsCombinatoricsFinanceTopological Materials and PhenomenaQuantum Mechanics and Non-Hermitian PhysicsAdvanced Fiber Laser Technologies