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

Valence Bond Theory

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...

The Pauli Exclusion Principle

The Pauli Exclusion Principle

The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:

Atomic Nuclei: Nuclear Spin State Overview

Atomic Nuclei: Nuclear Spin State Overview

NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...

Quantum Numbers

Quantum Numbers

It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.

π Electron Effects on Chemical Shift: Overview

π Electron Effects on Chemical Shift: Overview

An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0, resulting in...

Magnetic Moment of an Electron

Magnetic Moment of an Electron

Electrons revolving around a nucleus are analogous to a circular current carrying loop. This current produces a magnetic dipole moment proportional to the electron's orbital angular momentum. Since the orbital angular momentum is quantized in terms of the reduced Planck's constant, the dipole moment is quantized in the Bohr Magneton. The value of the Bohr magneton is 9.27 x 10-24 Am2. Electrons also have an intrinsic spin angular momentum, and the associated spin magnetic moment is...

You might also read

Related Articles

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

Sort by

Same author

Critical review of recent advances in sample pretreatment and determination methods for therapeutic drug monitoring.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences·2026

Same author

TUBA4A: The Tale of an Unconventional Tubulin.

Cytoskeleton (Hoboken, N.J.)·2025

Same author

[Clinical study on guiding parents to promote oral health of pre-school children through self-made oral science video].

Shanghai kou qiang yi xue = Shanghai journal of stomatology·2024

Same author

Ultra-wideband self-powered photodetector based on suspended reduced graphene oxide with asymmetric metal contacts.

RSC advances·2022

Same author

High-Responsivity Photodetector Based on a Suspended Monolayer Graphene/RbAg<sub>4</sub>I<sub>5</sub> Composite Nanostructure.

ACS applied materials & interfaces·2020

Same author

Growth mechanism and photoelectric properties of a silver nanowire network prepared by solid state ionics method.

Nanotechnology·2020

Search research articles

Related Experiment Video

Updated: May 22, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Planar Dirac electrons in magnetic quantum dots.

Ning Yang¹, Jia-Lin Zhu

¹Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|May 1, 2012

Summary

Large graphene magnetic quantum dots confine electrons, showing unique energy spectra for massless electrons due to Coulomb interactions, not magnetic confinement. Mass increase alters spectra and crystallization.

More Related Videos

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Related Experiment Videos

Last Updated: May 22, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Area of Science:

Condensed Matter Physics
Quantum Dots
Graphene Nanostructures

Background:

Graphene magnetic quantum dots (GMQDs) are promising for nanoelectronics.
Understanding electron behavior in confined graphene systems is crucial.
Few-electron systems in quantum dots exhibit unique quantum phenomena.

Purpose of the Study:

To investigate size- and mass-dependent electronic properties of few-electron GMQDs.
To differentiate the effects of magnetic confinement versus Coulomb interactions in GMQDs.
To analyze the transition from ultra-relativistic to non-relativistic behavior.

Main Methods:

Theoretical exploration of energy spectra and electronic correlation.
Analysis of two- and three-electron systems within GMQDs.
Computational modeling of quantum dot properties.

Main Results:

Large GMQDs are necessary for effective electron confinement.
Massless electrons in large GMQDs exhibit distinct energy spectra and ground states compared to semiconductor quantum dots.
Differences arise from Coulomb interactions with two-component wavefunctions, not magnetic confinement.
Increasing electron mass causes a crossover from ultra-relativistic to non-relativistic spectra and enhances crystallization.

Conclusions:

Electron behavior in GMQDs is strongly influenced by intrinsic graphene properties and Coulomb interactions.
Size and mass are critical parameters for controlling quantum states in GMQDs.
Findings aid in understanding and manipulating few-electron states in graphene-based nanodevices.