Interactions suppress Quasiparticle Tunneling at Hall Bar Constrictions

Abstract

Tunneling of fractionally charged quasiparticles across a two-dimensional electron system on a fractional quantum Hall plateau is expected to be strongly enhanced at low temperatures. This theoretical prediction is at odds with recent experimental studies of samples with weakly-pinched quantum-point-contact constrictions, in which the opposite behavior is observed. We argue here that this unexpected finding is a consequence of electron-electron interactions near the point contact.

4 pages

References in corpus (34)

• Luttinger Liquid Behavior in Carbon Nanotubes
• One-Dimensional Fermi liquids
• Observation of the e/3 Fractionally Charged Laughlin Quasiparticles
• Sharp and Smooth Boundaries of Quantum Hall Liquids
• Exact Conductance through Point Contacts in the $\nu =1/3$ Fractional Quantum Hall Effect
• Impurity scattering and transport of fractional Quantum Hall edge state
• Resonant Tunneling Between Quantum Hall Edge States
• Quantum Dots in Strong Magnetic Fields: Stability Criteria for the Maximum Density Droplet
• Suppression of tunneling into multi-wall carbon nanotubes
• Exact non-equilibrium DC shot noise in Luttinger liquids and fractional quantum Hall devices
• Quantum Theory of Quantum-Hall Smectics
• Reconstruction of Fractional Quantum Hall Edges
• Scattering of Bunched Fractionally Charged Quasiparticles
• Field Theoretical Description of Quantum Hall Edge Reconstruction
• Universal structure of the edge states of the fractional quantum Hall states
• Properties of a Luttinger Liquid with Boundaries at Finite Temperature and Size
• Tunneling into the edge of a compressible Quantum Hall state
• Evidence for non-linear quasiparticle tunneling between fractional quantum Hall edges
• The Evolution of Quasiparticle Charge in the Fractional Quantum Hall Regime
• Inter-edge strong-to-weak scattering evolution at a constriction in the fractional quantum Hall regime
• Nonuniversal behavior of scattering between fractional quantum Hall edges
• Bunching of Fractionally-Charged Quasiparticles Tunneling through High Potential Barriers
• Effective action of a compressible QH state edge: application to tunneling
• Dynamics of Dissipative Quantum Hall Edges
• Shot Noise and the Transmission of Dilute Laughlin Quasiparticles
• Periphery deformations and tunneling at correlated quantum-Hall edges
• Fractional-quantum-Hall edge electrons and Fermi statistics
• Plasmon Modes and Correlation Functions in Quantum Wires and Hall Bars
• Inter edge Tunneling in Quantum Hall Line Junctions
• Coulomb interactions and delocalization in quantum Hall constrictions
• Observability of counterpropagating modes at fractional-quantum-Hall edges
• Charge Density Wave Behaviour of the Integer Quantum Hall Effect Edge States
• How Irrelevant Operators affect the Determination of Fractional Charge
• Currents and correlations in Luttinger liquids and carbon nanotubes at finite temperature and size: a bosonization study

Cited by in corpus (44)

• Particle-hole symmetry without particle-hole symmetry in the quantum Hall effect at ν = 5/2
• Fractional charge and fractional statistics in the quantum Hall effects
• Bethe-Ansatz density-functional theory of ultracold repulsive fermions in one-dimensional optical lattices
• Particle-hole symmetric Luttinger liquids in a quantum Hall circuit
• Anomalous charge tunneling in the fractional quantum Hall edge states at filling factor ν= 5/2
• Influence of device geometry on tunneling in ν=5/2 quantum Hall liquid
• Charge tunneling in fractional edge channels
• Inter-edge interactions and novel fixed points at a junction of quantum Hall line junctions
• Relevance of multiple-quasiparticle tunneling between edge states at ν=p/(2np+1)
• Environmental induced renormalization effects in quantum Hall edge states
• The sixteenfold way and the quantum Hall effect at half-integer filling factors
• Neutral modes edge state dynamics through quantum point contacts
• Line junction in a quantum Hall system with two filling fractions
• Scaling dimension of quantum Hall quasiparticles from tunneling current noise measurements
• Edge State Tunneling in a Split Hall Bar Model
• Observation of the scaling dimension of fractional quantum Hall anyons
• Anyon statistics through conductance measurements of time-domain interferometry
• Temperature Dependence of the Tunneling Amplitude between Quantum Hall Edges
• Edge Magnetoplasmons in Quantum Hall Line Junction Systems
• Thermal interferometry of anyons
• Transport through constricted quantum Hall edge systems: beyond the quantum point contact
• Tunneling in Fractional Quantum Hall line junctions
• Transport of fractional Hall quasiparticles through an antidot
• Identification of topological order in the fractional quantum Hall state at $\nu =1/4$
• Dynamics of parafermionic states in transport measurements
• Different fractional charges from auto- and cross-correlation noise in quantum Hall states without upstream modes
• Role of scaling dimensions in generalized noises in fractional quantum Hall tunneling due to a temperature bias
• Effect of inter-edge Coulomb interactions on transport through a point contact in a ν= 5/2 quantum Hall state
• Multiple-quasiparticle agglomerates at ν=2/5
• Finite frequency noise for edge states at filling factor $\nu =2/5$
• On transport in quantum Hall systems with constrictions
• Electrostatics of Edge States of Quantum Hall Systems with Constrictions: Metal--Insulator Transition Tuned by External Gates
• Many-body study of a quantum point contact in the fractional quantum Hall regime at v=5/2
• Quasiparticle Andreev reflection in the Laughlin fractions of the fractional quantum Hall effect
• Metal-Insulator Transition Tuned by External Gates in Hall Systems with Constrictions
• Exchange-phase erasure in anyonic Hong-Ou-Mandel interferometry
• AC conductivity of a quantum Hall line junction
• Tunneling current noise in the fractional quantum Hall effect: when the effective charge is not what it appears to be
• Universal Anyon Tunneling in a Chiral Luttinger Liquid
• Photo-assisted shot noise probes multiple charge carriers in quantum Hall edges
• Edge mode velocities in the quantum Hall effect from a dc measurement
• Finite frequency noise for Laughlin state investigated by a resonant circuit
• Detecting entanglement with transport measurement in weakly interacting and fluctuating systems
• Extracting the scaling dimension of quantum Hall quasiparticles from current correlations