Relaxation in Driven Integer Quantum Hall Edge States

          @misc{ scivideos_PIRSA:12060000,
            doi = {10.48660/12060000},
            url = {https://pirsa.org/12060000},
            author = {Chalker, John},
            keywords = {Mathematical physics},
            language = {en},
            title = {Relaxation in Driven Integer Quantum Hall Edge States},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2012},
            month = {jun},
            note = {PIRSA:12060000 see, \url{https://scivideos.org/index.php/pirsa/12060000}}
          }
          

Abstract

This talk will be about non-equilibrium many-body physics in integer quantum Hall edge states far from equilibrium. Recent experiments have generated a highly non-thermal electron distribution by bringing together at a point contact two quantum Hall edge states originating from sources at different potentials. The relaxation of this distribution to a stationary form is observed as a function of distance downstream from the contact [Phys. Rev. Lett. 105, 056803 (2010)]. I will discuss the broader context for the experiments and a physical picture of the equilibration process. I will also present an exact treatment of a minimal model for the experiment with results that account well for the observations. [Joint work with Dmitry Kovrizhin]