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

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

In aromatic compounds, such as benzene, the circulation of (4n + 2) π-electrons sets up a diamagnetic or diatropic ring current around the perimeter of the molecule. This current induces a magnetic field that opposes the external field inside the ring and reinforces it on the outside. The protons in benzene are deshielded and exhibit high chemical shifts in the range 6.5–8.5 ppm. The shielding effect at the center of the ring is evident in complex aromatic molecules, such as annulenes. In...

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 de Broglie Wavelength

The de Broglie Wavelength

In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...

Imperfections in Crystal Structure: Stoichiometric Point Defects

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...

You might also read

Related Articles

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

Sort by

Same author

Spin and valley dependent electronic transport in molybdenum disulfide considering up to the second order k-dependent terms: a more exact solution.

Physical chemistry chemical physics : PCCP·2019

Same author

Electrostatic quantum dots in silicene.

Scientific reports·2018

Same author

Extraction of the Rashba spin-orbit coupling constant from scanning gate microscopy conductance maps for quantum point contacts.

Scientific reports·2017

Same author

Spin-valley dynamics of electrically driven ambipolar carbon-nanotube quantum dots.

Journal of physics. Condensed matter : an Institute of Physics journal·2017

Same author

Generation of large spin and valley currents in a quantum pump based on molybdenum disulfide.

Physical chemistry chemical physics : PCCP·2017

Same author

Controllable quantum valley pumping with high current in a silicene junction.

Nanotechnology·2016

Search research articles

Related Experiment Video

Updated: Jun 2, 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

Electronic properties of a defected ring-shaped quantum dot array.

Kh Shakouri¹, M Esmaeilzadeh, B Szafran

¹Department of Physics, Iran University of Science and Technology, Narmak, Tehran, Iran.

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

|May 17, 2011

Summary

We theoretically studied quantum dots in a magnetic field, revealing fractional Aharonov-Bohm oscillation periods due to electron interactions. Disorder can alter this, and weak interactions enhance persistent current in defected arrays.

More Related Videos

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Related Experiment Videos

Last Updated: Jun 2, 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

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

Published on: June 28, 2016

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Area of Science:

Quantum physics
Condensed matter theory
Mesoscopic systems

Background:

Quantum dots exhibit unique electronic properties influenced by their arrangement and potential landscape.
Aharonov-Bohm oscillations are a key phenomenon in mesoscopic systems, sensitive to electron interactions and disorder.
Understanding electron-electron interactions is crucial for predicting the behavior of quantum dot arrays.

Purpose of the Study:

To theoretically investigate the energy spectrum and persistent tunneling current in circularly arranged quantum dots.
To analyze the impact of disorder and electron-electron interactions on Aharonov-Bohm oscillation periods.
To explore the relationship between interaction strength and persistent current in perfect and defected arrays.

Main Methods:

Analytical derivation of energy dispersion for a perfect quantum dot array.
Theoretical modeling of disorder effects on the energy spectrum and persistent current.
Investigation of electron-electron interaction effects on Aharonov-Bohm oscillations and persistent current.

Main Results:

An analytical formula for energy dispersion was derived for a perfect quantum dot array.
Fractional Aharonov-Bohm oscillation periods were observed for interacting electrons in perfect arrays.
A critical interaction strength was identified for a transition from integer to fractional periods in defected arrays.
Persistent current in defected arrays is greater for weakly interacting electrons than for non- or strongly interacting ones.

Conclusions:

Electron-electron interactions significantly alter Aharonov-Bohm oscillation periods in quantum dot arrays.
Disorder plays a critical role in the transition of oscillation periods.
Weak electron-electron interactions can enhance persistent current in defected quantum dot systems.