Spin-momentum locked interaction between guided photons and surface electrons in topological insulators
Spin-momentum locked interaction between guided photons and surface electrons in topological insulators
Abstract The propagation of electrons and photons can respectively have the spin-momentum locking effect which correlates spin with linear momentum. For surface electrons in three-dimensional topological insulators (TIs), their spin is locked to the transport direction. Analogously, photons in optical waveguides carry transverse spin angular momentum which is also locked …