Photoinduced Floquet mixed-Weyl semimetallic phase in a carbon allotrope
Photoinduced Floquet mixed-Weyl semimetallic phase in a carbon allotrope
The interplay between light and matter attracts tremendous interest for exploring novel topological quantum states and their phase transitions. Here we show by first-principles calculations and the Floquet theorem that a carbon allotrope body-centered tetragonal ${\text{C}}_{16}$ $(\mathrm{bct}\text{\ensuremath{-}}{\mathrm{C}}_{16})$, a typical nodal-line semimetal, exhibits exotic photoinduced Floquet mixed-Weyl semimetallic features. Under the …