Magnetic field dependent equilibration of fractional quantum Hall edge modes
Tanmay Maiti, Pooja Agarwal, Suvankar Purkait, G J Sreejith, Sourin, Das, Giorgio Biasiol, Lucia Sorba, and Biswajit Karmakar
TL;DR
This study investigates how magnetic fields influence the equilibration of fractional quantum Hall edge modes, revealing field-dependent behavior and increased equilibration lengths linked to edge reconstruction.
Contribution
It demonstrates magnetic field dependent equilibration of FQH edge modes and connects this to edge reconstruction effects, a novel insight into quantum Hall physics.
Findings
Observation of distinct FQH plateaus at different magnetic fields.
Magnetic field dependence of edge mode equilibration lengths.
Enhanced equilibration lengths with increasing magnetic field.
Abstract
Fractional conductance is measured by partitioning edge state using gate-tunable fractional quantum Hall (FQH) liquids of filling 1/3 or 2/3 for current injection and detection. We observe two sets of FQH plateaus 1/9, 2/9, 4/9 and 1/6, 1/3, 2/3 at low and high magnetic field ends of the plateau respectively. The findings are explained by magnetic field dependent equilibration of three FQH edge modes with conductance arising from edge reconstruction. The results reveal remarkable enhancement of the equilibration lengths of the FQH edge modes with increasing field.
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