4.8 Article

Absence of edge reconstruction for quantum Hall edge channels in graphene devices

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Materials Science, Multidisciplinary

Mapping quantum Hall edge states in graphene by scanning tunneling microscopy

T. Johnsen et al.

Summary: Researchers used scanning tunneling microscopy to investigate the quantum Hall edge states of monolayer graphene and compared the results with theoretical calculations. They found that a proper choice of gate voltage allowed for accurate mapping of the edge state pattern, and observed extended compressible regions, the antinodal structure of edge states, and their meandering along the lateral interface.

PHYSICAL REVIEW B (2023)

Review Physics, Multidisciplinary

Nonequilibrium Charge Dynamics of Tomonaga-Luttinger Liquids in Quantum Hall Edge Channels

Toshimasa Fujisawa

Summary: Tomonaga-Luttinger liquids exhibit unique features that are not present in ordinary Fermi liquids. Recent advancements in measurement techniques have allowed the study of these unique characteristics in 1D quantum Hall edge channels. This review provides an overview of nonequilibrium dynamics in quantum-Hall Tomonaga-Luttinger liquids, including collective excitations, transport eigenmodes, and nonthermal steady states related to integrable models.

ANNALEN DER PHYSIK (2022)

Article Multidisciplinary Sciences

Visualizing broken symmetry and topological defects in a quantum Hall ferromagnet

Xiaomeng Liu et al.

Summary: The interaction between electrons in graphene under high magnetic fields leads to the formation of various quantum Hall ferromagnetic (QHFM) phases with broken spin or valley symmetry. Using scanning tunneling spectroscopy (STS), we were able to visualize atomic-scale electronic wave functions and observe valley ordering in QHFM phases, as well as spectral features of fractional quantum Hall phases in graphene. The results provide insights into the electronic properties of materials and their topological excitations.

SCIENCE (2022)

Article Multidisciplinary Sciences

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

Ravi Kumar et al.

Summary: Graphene has recently been used as a new platform for studying quantum Hall states. Noise measurements have provided evidence for the presence and ballistic nature of the upstream mode in the hole-conjugate fractional quantum Hall state in bilayer graphene. The existence of upstream modes moving against the charge current flow direction is crucial for the emergence of renormalized modes with exotic quantum statistics, with excess noise at the edge serving as a smoking gun for their presence.

NATURE COMMUNICATIONS (2022)

Article Multidisciplinary Sciences

Imaging tunable quantum Hall broken-symmetry orders in graphene

Alexis Coissard et al.

Summary: In this study, three distinct broken-symmetry phases in graphene were directly imaged using scanning tunnelling spectroscopy. It was found that graphene exhibits different lattice-scale orders under different conditions, deviating from current theoretical predictions. These findings are important for uncovering correlated phases of matter in other quantum materials.

NATURE (2022)

Article Physics, Multidisciplinary

Heat Equilibration of Integer and Fractional Quantum Hall Edge Modes in Graphene

G. Le Breton et al.

Summary: This study demonstrates the thermal equilibrium between integer channels and fractional channels in quantum Hall states of graphene. The results reveal markedly different regimes of quantized heat transport depending on edge electrostatics, providing a better understanding of the complex edge physics in the fractional quantum Hall regime.

PHYSICAL REVIEW LETTERS (2022)

Article Nanoscience & Nanotechnology

Aharonov-Bohm effect in graphene-based Fabry-Perot quantum Hall interferometers

Yuval Ronen et al.

Summary: Interferometers probe the wave-nature and exchange statistics of indistinguishable particles, enabling the observation and control of FQHE through graphene-based interferometers. Graphite-encapsulated architectures establish vdW heterostructures as a versatile alternative to GaAs-based interferometers for experiments targeting anyonic quasi-particles.

NATURE NANOTECHNOLOGY (2021)

Article Nanoscience & Nanotechnology

A tunable Fabry-Perot quantum Hall interferometer in graphene

Corentin Deprez et al.

Summary: This study demonstrates high-mobility monolayer graphene as an alternative material system for Fabry-Perot quantum Hall interference in the integer quantum Hall regime, allowing for high-visibility Aharonov-Bohm interference tunable through electrostatic gating or magnetic fields. The coherence length of graphene devices at low temperatures enables coherently coupled double Fabry-Perot interferometry and potential investigations into anyonic excitations in fractional quantum Hall states in the future.

NATURE NANOTECHNOLOGY (2021)

Article Multidisciplinary Sciences

Edge channels of broken-symmetry quantum Hall states in graphene visualized by atomic force microscopy

Sungmin Kim et al.

Summary: The quantum Hall effect in graphene exhibits unique properties, with broken-symmetry edge states that have been difficult to spatially measure. This article spatially maps these edge states using atomic force microscopy, showing a gapped ground state transitioning from the bulk through to the quantum Hall edge boundary.

NATURE COMMUNICATIONS (2021)

Article Multidisciplinary Sciences

Long-range nontopological edge currents in charge-neutral graphene

A. Aharon-Steinberg et al.

Summary: Van der Waals heterostructures exhibit unique electronic properties and have been studied using nonlocal measurements. Graphene edges with charge accumulation are found to produce giant nonlocal effects, supporting long-range currents. Edge conductance affects current flow in moderate magnetic fields, leading to decoupling between edge and bulk transport. The observed exotic flow patterns are sensitive to edge disorder and can flow against the global electric field. Thus, edge transport in charge-neutral graphene can explain various nonlocal transport measurements.

NATURE (2021)

Article Physics, Multidisciplinary

Vanishing Thermal Equilibration for Hole-Conjugate Fractional Quantum Hall States in Graphene

Saurabh Kumar Srivastav et al.

Summary: The transport through edge channels plays a significant role in the conduction of quantum Hall phases, with quantized values of charge and thermal conductances appearing when equilibration processes dominate. Measurements on electrical and thermal conductances in different QH phases revealed inconsistent thermal conductance values that remain insensitive to various symmetries, indicating a universal nature. Theoretical analysis suggests that while electrical equilibration at the edge occurs over a finite length scale, the thermal equilibration length diverges for strong electrostatic interactions, elucidating the subtle nature of transport crossover from coherent, mesoscopic to topology-dominated.

PHYSICAL REVIEW LETTERS (2021)

Review Physics, Multidisciplinary

Fractional charge and fractional statistics in the quantum Hall effects

D. E. Feldman et al.

Summary: This article discusses the key features of the fractional quantum Hall effect, focusing on quasiparticles with fractional charge and statistics. It provides detailed definitions and methods for observing these properties, along with a review of current experimental status and discussions on non-Abelian statistics. The attempts to find experimental evidence for non-Abelian quasiparticles in certain quantum Hall systems are also explored.

REPORTS ON PROGRESS IN PHYSICS (2021)

Article Multidisciplinary Sciences

Upstream modes and antidots poison graphene quantum Hall effect

N. Moreau et al.

Summary: The quantum Hall effect in graphene is susceptible to the detrimental influence of edge antidots, leading to potential topological breakdown and reduced robustness of edge channels. Scanning gate microscopy can provide insights into the vulnerability of graphene quantum Hall channels.

NATURE COMMUNICATIONS (2021)

Article Materials Science, Multidisciplinary

Fractional edge reconstruction in integer quantum Hall phases

Udit Khanna et al.

Summary: Protected edge modes are crucial in topological states of matter, where not only integer-charge modes may be supported by the system, but also edge modes that can host fractional excitations. This breakthrough could lead to new experimental predictions and validate previous observations.

PHYSICAL REVIEW B (2021)

Article Multidisciplinary Sciences

Helical quantum Hall phase in graphene on SrTiO3

Louis Veyrat et al.

SCIENCE (2020)

Article Multidisciplinary Sciences

Fractional statistics in anyon collisions

H. Bartolomei et al.

SCIENCE (2020)

Article Physics, Multidisciplinary

Direct observation of anyonic braiding statistics

J. Nakamura et al.

NATURE PHYSICS (2020)

Article Physics, Multidisciplinary

Melting of Interference in the Fractional Quantum Hall Effect: Appearance of Neutral Modes

Rajarshi Bhattacharyya et al.

PHYSICAL REVIEW LETTERS (2019)

Article Physics, Multidisciplinary

Electronic correlations in twisted bilayer graphene near the magic angle

Youngjoon Choi et al.

NATURE PHYSICS (2019)

Article Multidisciplinary Sciences

Imaging work and dissipation in the quantum Hall state in graphene

A. Marguerite et al.

NATURE (2019)

Review Physics, Multidisciplinary

Coherent control of single electrons: a review of current progress

Christopher Bauerle et al.

REPORTS ON PROGRESS IN PHYSICS (2018)

Article Chemistry, Multidisciplinary

Tuning the Pseudospin Polarization of Graphene by a Pseudomagnetic Field

Alexander Georgi et al.

NANO LETTERS (2017)

Article Physics, Multidisciplinary

Suppression of Interference in Quantum Hall Mach-Zehnder Geometry by Upstream Neutral Modes

Moshe Goldstein et al.

PHYSICAL REVIEW LETTERS (2016)

Article Materials Science, Multidisciplinary

Edge structure of graphene monolayers in the ν=0 quantum Hall state

Angelika Knothe et al.

PHYSICAL REVIEW B (2015)

Article Multidisciplinary Sciences

Robust electron pairing in the integer quantum hall effect regime

H. K. Choi et al.

NATURE COMMUNICATIONS (2015)

Article Physics, Multidisciplinary

Kwant: a software package for quantum transport

Christoph W. Groth et al.

NEW JOURNAL OF PHYSICS (2014)

Article Materials Science, Multidisciplinary

Spectrum of edge states in the ν=0 quantum Hall phases in graphene

P. K. Pyatkovskiy et al.

PHYSICAL REVIEW B (2014)

Article Multidisciplinary Sciences

One-Dimensional Electrical Contact to a Two-Dimensional Material

L. Wang et al.

SCIENCE (2013)

Article Multidisciplinary Sciences

Microwave synthesizer using an on-chip Brillouin oscillator

Jiang Li et al.

NATURE COMMUNICATIONS (2013)

Article Physics, Multidisciplinary

Local thermometry of neutral modes on the quantum Hall edge

Vivek Venkatachalam et al.

NATURE PHYSICS (2012)

Article Physics, Multidisciplinary

Scanning capacitance imaging of compressible and incompressible quantum Hall effect edge strips

M. E. Suddards et al.

NEW JOURNAL OF PHYSICS (2012)

Article Physics, Multidisciplinary

Renormalization of the Graphene Dispersion Velocity Determined from Scanning Tunneling Spectroscopy

Jungseok Chae et al.

PHYSICAL REVIEW LETTERS (2012)

Review Physics, Multidisciplinary

Electronic properties of graphene: a perspective from scanning tunneling microscopy and magnetotransport

Eva Y. Andrei et al.

REPORTS ON PROGRESS IN PHYSICS (2012)

Article Materials Science, Multidisciplinary

Quantized Landau level spectrum and its density dependence in graphene

Adina Luican et al.

PHYSICAL REVIEW B (2011)

Article Materials Science, Multidisciplinary

Theory of the Fabry-Perot quantum Hall interferometer

Bertrand I. Halperin et al.

PHYSICAL REVIEW B (2011)

Article Physics, Multidisciplinary

Realizing Universal Edge Properties in Graphene Fractional Quantum Hall Liquids

Zi-Xiang Hu et al.

PHYSICAL REVIEW LETTERS (2011)

Article Physics, Multidisciplinary

Imaging of Coulomb-Driven Quantum Hall Edge States

Keji Lai et al.

PHYSICAL REVIEW LETTERS (2011)

Article Physics, Multidisciplinary

Near-Field Optical Mapping of Quantum Hall Edge States

H. Ito et al.

PHYSICAL REVIEW LETTERS (2011)

Article Multidisciplinary Sciences

Metrology and microscopic picture of the integer quantum Hall effect

J. Weis et al.

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES (2011)

Article Multidisciplinary Sciences

High-resolution tunnelling spectroscopy of a graphene quartet

Young Jae Song et al.

NATURE (2010)

Article Physics, Multidisciplinary

Visualization of charge transport through Landau levels in graphene

G. Nazin et al.

NATURE PHYSICS (2010)

Article Materials Science, Multidisciplinary

Charge accumulation at the boundaries of a graphene strip induced by a gate voltage: Electrostatic approach

P. G. Silvestrov et al.

PHYSICAL REVIEW B (2008)

Article Physics, Multidisciplinary

Quantum Hall Transition in Real Space: From Localized to Extended States

K. Hashimoto et al.

PHYSICAL REVIEW LETTERS (2008)

Article Physics, Condensed Matter

Charge and spin transport at the quantum Hall edge of graphene

Dmitry A. Abanin et al.

SOLID STATE COMMUNICATIONS (2007)

Article Materials Science, Multidisciplinary

Many-body interaction effects in doped and undoped graphene: Fermi liquid versus non-Fermi liquid

S. Das Sarma et al.

PHYSICAL REVIEW B (2007)

Article Physics, Multidisciplinary

Spin-filtered edge states and quantum hall effect in graphene

DA Abanin et al.

PHYSICAL REVIEW LETTERS (2006)

Article Materials Science, Multidisciplinary

Edge states and the quantized Hall effect in graphene

L Brey et al.

PHYSICAL REVIEW B (2006)

Review Physics, Multidisciplinary

The kernel polynomial method

A Weisse et al.

REVIEWS OF MODERN PHYSICS (2006)

Article Physics, Multidisciplinary

STS observations of landau levels at graphite surfaces

T Matsui et al.

PHYSICAL REVIEW LETTERS (2005)