Prof. Assa Auerbach Department of Physics, Technion – Israel Institute of Technology, Haifa

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Date(s) - 14/03/2017
13 h 00 min - 14 h 00 min

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“Solving Duncan’s homework problem – conductivity in the Lowest Landau Level »

 

 

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

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