Topological dephasing in the $\nu =2/3$ fractional Quantum Hall Regime

Abstract

We study dephasing in electron transport through a large quantum dot (a Fabry-Perot interferometer) in the fractional quantum Hall regime with filling factor $2/3$. In the regime of sequential tunneling, dephasing occurs due to electron fractionalization into counterpropagating charge and neutral edge modes on the dot. In particular, when the charge mode moves much faster than the neutral mode, and at temperatures higher than the level spacing of the dot, electron fractionalization combined with tje fractional statistics of the charge mode leads to the dephasing selectively suppressing $h/e$ Aharonov-Bohm oscillations but not $h/(2e)$ oscillations, resulting in oscillation-period halving.

11pages, 3 figures

References in corpus (13)

• Observation of neutral modes in the fractional quantum Hall regime
• Dephasing in the electronic Mach-Zehnder interferometer at filling factor 2
• The non-Abelian Interferometer
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• Non-equilibrium Luttinger liquid: Zero-bias anomaly and dephasing
• Nonequilibrium Dephasing in an Electronic Mach-Zehnder Interferometer
• The Behavior of Electronic Interferometers in the Non-Linear Regime
• Extracting net current from an upstream neutral mode in the fractional quantum Hall regime
• Thermoelectric probe for neutral edge modes in the fractional quantum Hall regime
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• Coulomb blockade with neutral modes
• Capacitive interaction model for Aharonov-Bohm effects of a quantum Hall antidot

Cited by in corpus (13)

• Direct observation of anyonic braiding statistics at the $\nu$=1/3 fractional quantum Hall state
• Aharonov-Bohm interference of fractional quantum Hall edge modes
• Transport in a disordered $\nu =2/3$ fractional quantum Hall junction
• Incoherent transport on the $\nu =2/3$ quantum Hall edge
• Suppression of interference in quantum Hall Mach-Zehnder geometry by upstream neutral modes
• Conductance plateaus and shot noise in fractional quantum Hall point contacts
• Flux superperiods and periodicity transitions in quantum Hall interferometers
• Magnetic field dependent equilibration of fractional quantum Hall edge modes
• Coherence recovery mechanisms in quantum Hall edge states
• Spin-charge separation in an Aharonov-Bohm interferometer
• Temperature dependent equilibration of spin orthogonal quantum Hall edge modes
• Transmission line approach to transport of heat in chiral systems with dissipation
• Collapse of edge reconstruction in compressible Quantum Hall fluid within filling fraction range 2/3 to 1