Spectroscopic study on hot-electron transport in a quantum Hall edge channel

Abstract

Hot electron transport in a quantum Hall edge channel of an AlGaAs/GaAs heterostructure is studied by investigating the energy distribution function in the channel. Ballistic hot-electron transport, its optical-phonon replicas, weak electron-electron scattering, and electron-hole excitation in the Fermi sea are clearly identified in the energy spectra. The optical-phonon scattering is analyzed to evaluate the edge potential profile. We find that the electron-electron scattering is significantly suppressed with increasing the hot-electron's energy well above the Fermi energy. This can be understood with suppressed Coulomb potential with longer distance for higher energy. The results suggest that the relaxation can be suppressed further by softening the edge potential. This is essential for studying non-interacting chiral transport over a long distance.

arXiv comment8 pages, 7 figures

References in corpus (24)

• An Electronic Mach-Zehnder Interferometer
• Universal theory of nonlinear Luttinger liquids
• Energy Relaxation in the Integer Quantum Hall Regime
• Clock-controlled emission of single-electron wavepackets in a solid-state circuit
• Fractionalized Wave Packets from an Artificial Tomonaga-Luttinger Liquid
• Hong-Ou-Mandel experiment for temporal investigation of single electron fractionalization
• Partitioning of on-demand electron pairs
• Edge-State Velocity and Coherence in a Quantum Hall Fabry-Perot Interferometer
• Waveform measurement of charge- and spin-density wave packets in a Tomonaga-Luttinger liquid
• Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum-Hall Edge States
• Decoherence and relaxation of a single electron in a one dimensional conductor
• Energy relaxation and thermalization of hot electrons in quantum wires
• Interaction induced edge channel equilibration
• Relaxation of hot electrons in a degenerate two-dimensional electron system: transition to one-dimensional scattering
• LO-phonon emission rate of hot electrons from an on-demand single-electron source in a GaAs/AlGaAs heterostructure
• Robust quantum coherence above the Fermi sea
• Phonon emission and arrival times of electrons from a single-electron source
• Hierarchy of modes in an interacting system
• Electron-avalanche amplifier based on the electronic Venturi effect
• Long-lived binary tunneling spectrum in a quantum-Hall Tomonaga-Luttinger liquid
• Statistical theory of relaxation of high energy electrons in quantum Hall edge states
• Hot Electrons Regain Coherence in Semiconducting Nanowires
• An electron jet pump: The Venturi effect of a Fermi liquid
• Spectroscopy of Equilibrium and Non-Equilibrium Charge Transfer in Semiconductor Quantum Structures

Cited by in corpus (16)

• Relaxation and revival of quasiparticles injected in an interacting quantum Hall liquid
• Two electrons interacting at a mesoscopic beam splitter
• Quantifying nonequlibrium thermodynamic operations in a multiterminal mesoscopic system
• Charge equilibration in integer and fractional quantum Hall edge channels in a generalized Hall-bar device
• Trapping and counting ballistic non-equilibrium electrons
• Nonlinear chiral refrigerators
• Asymmetries of thermal processes in open quantum systems
• Ballistic hot-electron transport in a quantum Hall edge channel defined by a double gate
• Nonlocal thermoelectric detection of interaction and correlations in edge states
• Mitigating decoherence in hot electron interferometry
• Non-thermal Tomonaga-Luttinger liquid eventually emerging from hot electrons in the quantum Hall regime
• Measuring the arrival time of an electron wave packet using a dynamical potential barrier
• Semiconductor-based electron flying qubits: Review on recent progress accelerated by numerical modelling
• Thermal Transport Imaging in the Quantum Hall Edge Channel
• Asymmetric arms maximise visibility in hot-electron interferometers
• Coulomb collisions of hot and cold single electrons in series-coupled silicon single-electron pumps