Energy transport by neutral collective excitations at the quantum Hall edge

Abstract

We use the edge of the quantum Hall sample to study the possibility for counter-propagating neutral collective excitations. A novel sample design allows us to independently investigate charge and energy transport along the edge. We experimentally observe an upstream energy transfer with respect to the electron drift for the filling factors 1 and 1/3. Our analysis indicates that a neutral collective mode at the interaction-reconstructed edge is a proper candidate for the experimentally observed effect.

Final version, as appear in PRL

References in corpus (5)

• Observation of neutral modes in the fractional quantum Hall regime
• Charge-statistics separation and probing non-Abelian states
• Nonequilibrium electron spectroscopy of Luttinger liquids
• Probing the neutral edge modes in transport across a point contact via thermal effects in the Read-Rezayi non-abelian quantum Hall states
• Separately contacted edge states at high imbalance in the integer and fractional quantum Hall effect regime

Cited by in corpus (15)

• Local Thermometry of Neutral Modes on the Quantum Hall Edge
• Edge reconstruction in the $\nu =2/3$ fractional quantum Hall state
• Contacts, equilibration, and interactions in fractional quantum Hall edge transport
• Chirality, causality, and fluctuation-dissipation theorems in non-equilibrium steady states
• Auger-spectroscopy in quantum Hall edge channels: a possible resolution to the missing energy problem
• A quantum Hall Mach-Zehnder interferometer far beyond the equilibrium
• Fluctuation theorems without time-reversal symmetry
• Relaxation and edge reconstruction in integer quantum Hall systems
• Equilibration in a chiral Luttinger liquid
• Thermal transport driven by charge imbalance in graphene in magnetic field, close to the charge neutrality point at low temperature: Non local resistance
• Measuring the Luttinger liquid parameter with shot noise
• Statistics of energy dissipation in a quantum dot operating in the cotunneling regime
• Long lifetimes of ultra-hot particles in interacting Fermi systems
• Dc Electrical Current Generated by Upstream Neutral Modes
• Elevated Hall Responses as Indicators of Edge Reconstruction