PART B: Topological insulators

  • Published 2013
9.4.1. Hall effect † Consider electrons moving in a 2D plane (the system is known as a 2D electron gas or 2DEG). If we apply an in-plane electric field E, we will get some electric current j. Typically, E  J . Let’s assume they are in the x direction Ex and jx. The resistivity is rxx = Ex  jx † Apply a B field perpendicular to the 2D plane. Lorentz force… CONTINUE READING