Spin-momentum locking and ultrafast spin-charge conversion in ultrathin epitaxial Bi${}_{1-x}$Sb${}_x$ topological insulator

E. Rongione, L. Baringthon, D. She +13

The helicity of 3D topological insulator surface states has drawn significant attention in spintronics owing to spin-momentum locking where the carriers' spin is oriented perpendic…