Browsing by Author "Li, Heqiu"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Topological Protection from Random Rashba Spin-Orbit Backscattering: Ballistic Transport in a Helical Luttinger Liquid(American Physical Society, 2016) Xie, Hong-Yi; Li, Heqiu; Chou, Yang-Zhi; Foster, Matthew S.; Rice Center for Quantum MaterialsThe combination of Rashba spin-orbit coupling and potential disorder induces a random current operator for the edge states of a 2D topological insulator. We prove that charge transport through such an edge is ballistic at any temperature, with or without Luttinger liquid interactions. The solution exploits a mapping to a spin 1/2 in a time-dependent field that preserves the projection along one randomly undulating component (integrable dynamics). Our result is exact and rules out random Rashba backscattering as a source of temperature-dependent transport, absent integrability-breaking terms.