Nonlinear optical response of type-II Weyl fermions in two dimensions

Yaraslau Tamashevich, Leone Di Mauro Villari, Marco Ornigotti

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
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Abstract

We present a theoretical model to study the nonlinear optical response of materials with a low-energy spectrum characterized by strongly tilted, type-II Weyl cones in two dimensions, which we call 2D Weyl materials. Our findings reveal that the tilted nature of the Weyl cones is responsible for the appearance of even harmonics in the nonlinear signal, as well as its strong polarization dependence. We discuss how it is possible to control such a nonlinear response and envision how 2D Weyl materials can be used to realize different photonic devices for sensing applications.

Original languageEnglish
Article number195102
JournalPhysical Review B
Volume105
Issue number19
DOIs
Publication statusPublished - 15 May 2022
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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