AbsfracfA charge density and current density model of a waveguide system has been developed to explore the ef€ects of electric field electrode poling. An optical waveguide may be modeled during poling by considering the dielectric charge distribution, polarization charge distribution, and conduetion charge generated by the poling field. These charge distributions are the source of poling curren...

Topological physics and strong electron-electron correlations in quantum materials are typically studied independently. However, there have been rapid recent developments which topological phase transitions emerge when the single-particle band structure is modified by interactions. We here demonstrate that room-temperature of (TaSe$_4$)$_2$I a Weyl semimetal with 24 pairs nodes. Owing to its qu...