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arXiv · 1612.06372

Non linear conductivity and collective charge excitations in the lowest Landau level

Assa Auerbach·Daniel P. Arovas
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Abstract

For weakly disordered fractional quantum Hall phases, the non linear photoconductivity is related to the charge susceptibility of the clean system by a Floquet boost. Thus, it may be possible to probe collective charge modes at finite wavevectors by electrical transport. 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.

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Assa Auerbach, Daniel P. Arovas. 2017-03-08. Non linear conductivity and collective charge excitations in the lowest Landau level. https://doi.org/10.1103/physrevlett.119.016601

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