Light-driven Lifshitz transitions in non-Hermitian multi-Weyl semimetals

Debashree Chowdhury, Ayan Banerjee, Awadhesh Narayan

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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.

Original languageEnglish
Article numberL051101
JournalPhysical Review A
Issue number5
StatePublished - 1 May 2021
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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