Auger-spectroscopy in quantum Hall edge channels: a possible resolution to the missing energy problem
arXiv:1902.10065 · doi:10.1038/s41467-019-11888-1
Abstract
Quantum Hall edge channels offer an efficient and controllable platform to study quantum transport in one dimension. Such channels are a prospective tool for the efficient transfer of quantum information at the nanoscale, and play a vital role in exposing intriguing physics. Electric current along the edge carries energy and heat leading to inelastic scattering, which may impede coherent transport. Several experiments attempting to probe the concomitant energy redistribution along the edge reported energy loss via unknown mechanisms of inelastic scattering. Here we employ quantum dots to inject and extract electrons at specific energies, to spectrally analyse inelastic scattering inside quantum Hall edge channels. We show that the "missing energy" puzzle can be untangled by incorporating non-local Auger-like processes, in which energy is redistributed between spatially separate parts of the sample. Our theoretical analysis, accounting for the experimental results, challenges common-wisdom analyses which ignore such non-local decay channels.
References in corpus (20)
- An Electronic Mach-Zehnder Interferometer
- Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
- Observation of neutral modes in the fractional quantum Hall regime
- Non-Equilibrium Edge Channel Spectroscopy in the Integer Quantum Hall Regime
- Electron quantum optics in ballistic chiral conductors
- Energy Relaxation in the Integer Quantum Hall Regime
- Electron quantum optics : partitioning electrons one by one
- Local Thermometry of Neutral Modes on the Quantum Hall Edge
- Separation of neutral and charge modes in one dimensional chiral edge channels
- Plasmon scattering approach to energy exchange and high frequency noise in nu=2 quantum Hall edge channels
- Chargeless heat transport in the fractional quantum Hall regime
- Interaction induced edge channel equilibration
- Equilibration of integer quantum Hall edge states
- Transport Spectroscopy of a Spin-Coherent Dot-Cavity System
- Nonequilibrium electron spectroscopy of Luttinger liquids
- Scanning gate experiments: from strongly to weakly invasive probes
- Charge and energy fractionalization mechanism in one-dimensional channels
- Energy transport by neutral collective excitations at the quantum Hall edge
- Spectroscopy of Equilibrium and Non-Equilibrium Charge Transfer in Semiconductor Quantum Structures
- Ballistic electron spectroscopy
Cited by in corpus (14)
- Macroscopic electron quantum coherence in a solid-state circuit
- Relaxation and revival of quasiparticles injected in an interacting quantum Hall liquid
- Trapping and counting ballistic non-equilibrium electrons
- Quasiparticle Andreev scattering in the fractional quantum Hall regime
- Geometric energy transport and refrigeration with driven quantum dots
- Influence of channel mixing in fermionic Hong-Ou-Mandel experiments
- Current correlations of Cooper-pair tunneling into a quantum Hall system
- Current cross-correlations in a quantum Hall collider at filling factor two
- Ballistic hot-electron transport in a quantum Hall edge channel defined by a double gate
- Interaction-induced charge transfer in a mesoscopic electron spectrometer
- Dissipation and dephasing in quantum Hall interferometers
- Electronic wave-packets in integer quantum Hall edge channels: relaxation and dissipative effects
- Ultrafast energy relaxation of quantum dot-generated 2D hot electrons
- Transmission line approach to transport of heat in chiral systems with dissipation