All-optical nonequilibrium pathway to stabilising magnetic Weyl semimetals in pyrochlore iridates

Abstract

Topological states may emerge in nonequilibrium but the mechanisms are much less understood. Here Topp et al. propose a nonequilibrium route to obtain the magnetic Weyl semimetallic phase in pyrochlore iridates by ultrafast modification of the effective electron-electron interactions with short laser pulses.