Fractional charge and fractional statistics in the quantum Hall effects

DE Feldman, BI Halperin - Reports on Progress in Physics, 2021 - iopscience.iop.org
Quasiparticles with fractional charge and fractional statistics are key features of the fractional
quantum Hall effect. We discuss in detail the definitions of fractional charge and statistics …

Duality between (2+ 1) d quantum critical points

T Senthil, DT Son, C Wang, C Xu - Physics Reports, 2019 - Elsevier
Duality refers to two equivalent descriptions of the same theory from different points of view.
Recently there has been tremendous progress in formulating and understanding possible …

Observation of ballistic upstream modes at fractional quantum Hall edges of graphene

R Kumar, SK Srivastav, C Spånslätt… - Nature …, 2022 - nature.com
The presence of “upstream” modes, moving against the direction of charge current flow in
the fractional quantum Hall (FQH) phases, is critical for the emergence of renormalized …

Distinguishing between non-abelian topological orders in a quantum Hall system

B Dutta, W Yang, R Melcer, HK Kundu, M Heiblum… - Science, 2022 - science.org
Quantum Hall states can harbor exotic quantum phases. The nature of these states is
reflected in the gapless edge modes owing to “bulk-edge” correspondence. The most …

Determination of topological edge quantum numbers of fractional quantum Hall phases by thermal conductance measurements

SK Srivastav, R Kumar, C Spånslätt… - Nature …, 2022 - nature.com
To determine the topological quantum numbers of fractional quantum Hall (FQH) states
hosting counter-propagating (CP) downstream (N d) and upstream (N u) edge modes, it is …

Vanishing thermal equilibration for hole-conjugate fractional quantum Hall states in graphene

SK Srivastav - Quantized Heat Flow as a Probe of Thermal …, 2024 - Springer
In the previous chapter, we discussed the thermal conductance measurement of integer
(\(\nu= 1, 2, 6\)) and a particle-like fractional (\(\nu= 4/3\)) quantum Hall states of the single …

Absent thermal equilibration on fractional quantum Hall edges over macroscopic scale

RA Melcer, B Dutta, C Spånslätt, J Park… - Nature …, 2022 - nature.com
Two-dimensional topological insulators, and in particular quantum Hall states, are
characterized by an insulating bulk and a conducting edge. Fractional states may host both …

Full Classification of Transport on an Equilibrated Edge via Shot Noise

S Manna, A Das, M Goldstein, Y Gefen - Physical Review Letters, 2024 - APS
The nature of the bulk topological order of the 5/2 non-Abelian fractional quantum Hall state
and the steady state of its edge are long-studied questions. The most promising non-Abelian …

Localization and conductance in fractional quantum Hall edges

M Yutushui, J Park, AD Mirlin - Physical Review B, 2024 - APS
The fractional quantum Hall (FQH) effect gives rise to abundant topological phases,
presenting an ultimate platform for studying the transport of edge states. Generic FQH edge …

Extracting the scaling dimension of quantum Hall quasiparticles from current correlations

N Schiller, Y Oreg, K Snizhko - Physical Review B, 2022 - APS
Fractional quantum Hall quasiparticles are generally characterized by two quantum
numbers: electric charge Q and scaling dimension Δ. For the simplest states (such as the …