AI Article Synopsis
- Hole-conjugate states in the fractional quantum Hall effect feature edge channels that can exchange charge and energy, raising questions about their interactions with integer quantum Hall edge channels.
- Research reveals that integer channels can significantly interact with fractional ones, influencing the heat transport along the edge.
- These findings deepen our understanding of the intricate edge physics in fractional quantum Hall systems, highlighting the role of edge electrostatics in heat equilibration.
Article Abstract
Hole-conjugate states of the fractional quantum Hall effect host counterpropagating edge channels which are thought to exchange charge and energy. These exchanges have been the subject of extensive theoretical and experimental works; in particular, it is yet unclear if the presence of integer quantum Hall edge channels stemming from fully filled Landau levels affects heat equilibration along the edge. In this Letter, we present heat transport measurements in quantum Hall states of graphene demonstrating that the integer channels can strongly equilibrate with the fractional ones, leading to markedly different regimes of quantized heat transport that depend on edge electrostatics. Our results allow for a better comprehension of the complex edge physics in the fractional quantum Hall regime.
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| http://dx.doi.org/10.1103/PhysRevLett.129.116803 | DOI Listing |
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