Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

The Hall Effect

The Hall Effect

Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting material. From a historical perspective, this experiment was the first to demonstrate that the charge carriers in most metals are negative.

$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

Induced Electric Dipoles

Induced Electric Dipoles

A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...

Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

Coulomb's Law and The Principle of Superposition

Coulomb's Law and The Principle of Superposition

Coulomb's Law describes the force experienced by two point charges under each other's presence. But what if there are more than two charges? For example, if there is a third charge, does it experience a force that is a simple combination of the individual forces due to the first two charges? Can it be described mathematically?
The Principle of Superposition answers the question. Yes, Coulomb's Law applies to each pair of charges, and the net force on each charge is the vector sum of the...

Atomic Force Microscopy

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Managing Painful Digital Ulcers in a Patient Undergoing Hemodialysis.

Actas dermo-sifiliograficas·2025

Same author

Managing Painful Digital Ulcers in a Patient Undergoing Hemodialysis.

Actas dermo-sifiliograficas·2025

Same author

Selective area molecular beam epitaxy of InSb on InP(111)<sub>B</sub>: from thin films to quantum nanostructures.

Nanotechnology·2025

Same author

Accelerated radiotherapy in the treatment of anal squamous cell carcinoma - a single institution retrospective evaluation.

Klinicka onkologie : casopis Ceske a Slovenske onkologicke spolecnosti·2024

Same author

Selective area epitaxy of in-plane HgTe nanostructures on CdTe(001) substrate.

Nanotechnology·2024

Same author

Systemic lupus erythematosus induced by anti-tumor necrosis factor α therapy in inflammatory rheumatic diseases: a case series.

Reumatismo·2024

Search research articles

Related Experiment Video

Updated: Jun 7, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Imaging Coulomb islands in a quantum Hall interferometer.

B Hackens¹, F Martins, S Faniel

¹Institute of Condensed Matter and Nanosciences-Nanophysics, Université catholique de Louvain, Louvain-la-Neuve B-1348, Belgium. benoit.hackens@uclouvain.be

Nature Communications

|October 27, 2010

Summary

Researchers used scanning gate microscopy to reveal quantum Hall (QH) Coulomb islands in mesoscopic systems. This finding explains complex magnetoresistance oscillations and enables local manipulation of QH localized states.

More Related Videos

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

Related Experiment Videos

Last Updated: Jun 7, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

Area of Science:

Condensed Matter Physics
Quantum Physics
Mesoscopic Systems

Background:

In the quantum Hall regime, electron transport is expected to occur via spatially separated edge states.
Mesoscopic systems exhibit complex electronic transmission and magnetoresistance oscillations.
Models suggest edge state interactions, like hopping or tunneling through Coulomb islands, explain these complexities.

Purpose of the Study:

To experimentally demonstrate the existence of quantum Hall (QH) Coulomb islands.
To spatially map the transport structure within a QH interferometer.
To elucidate the origins of complex magnetoresistance oscillations in mesoscopic systems.

Main Methods:

Utilized scanning gate microscopy to probe electronic transport.
Modulated tunneling between edge states and confined electron orbits to locate Coulomb islands.
Tuned magnetic fields to observe the evolution of active electron islands.

Main Results:

Provided direct evidence for the presence of QH Coulomb islands.
Revealed the spatial distribution and structure of electron transport within the interferometer.
Observed a continuous evolution of active electron islands with magnetic field tuning.

Conclusions:

The study successfully demonstrates QH Coulomb islands, explaining complex magnetoresistance oscillations.
The findings offer insights into the spatial structure of transport in QH interferometers.
This work paves the way for local-scale manipulation of QH localized states.