Solving Duncan’s homework problem and the non linear current in the Lowest Landau Level
TYPESolid State Seminar
Speaker:Assa Auerbach
Location:Lidow Nathan Rosen (300)
Using a Floquet boost trnsformation, I show that  the non linear photoconductivity can be used to  to probe collective charge modes  in clean Fractional Qauntum Hall systems. Incompressible phases, irradiated at slightly above the magneto-roton gap, are predicted to exhibit  negative photoconductivity and  zero resistance states with spontaneous internal electric fields.  Non linear conductivity can probe composite fermions' charge excitations in compressible filling factors.

Reference:  arXiv:1612.06372