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

Debye–Huckel–Onsager Conductance Equation

Debye–Huckel–Onsager Conductance Equation

The Debye-Hückel-Onsager equation is a cornerstone of physical chemistry, providing a method to determine the molar conductance (Λm) and molar conductance at infinite dilution (Λ°m) for uni-univalent electrolytes.Uni-univalent electrolytes are electrolytes that dissociate in solution to produce one cation with a +1 charge and one anion with a –1 charge per formula unit.This equation addresses two crucial phenomena: the asymmetry effect and the electrophoretic effect. According to this equation,...

Drug Concentration Versus Time Correlation

Drug Concentration Versus Time Correlation

The plasma drug concentration-time curve is a crucial tool in pharmacokinetics, representing the drug's concentration in plasma at different time intervals post-administration. This curve illustrates the drug's journey from absorption into the systemic circulation, distribution to body tissues, and eventual elimination through excretion or biotransformation.
Two pivotal parameters are the minimum effective concentration (MEC) and the minimum toxic concentration (MTC). The MEC is the lowest drug...

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...

Theory of Metallic Conduction

Theory of Metallic Conduction

The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...

¹H NMR: Interpreting Distorted and Overlapping Signals

¹H NMR: Interpreting Distorted and Overlapping Signals

Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...

Entropy Changes Accompanying Specific Processes

Entropy Changes Accompanying Specific Processes

Entropy, a measure of disorder in a system, changes during phase transitions like freezing or boiling. At the transition temperature Ttrs, where two phases are in equilibrium, the phase transition is a reversible process. The entropy change can be calculated from a substance's enthalpy of transition using the equation ΔStrs = ΔtrsH /Ttrs.When a perfect gas expands isothermally from one volume to another, entropy increases logarithmically with volume. Conversely, isothermal compression results...

You might also read

Related Articles

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

Sort by

Same author

Random-hopping approach to fluctuation phenomena in quantum dots with chiral symmetry.

Chaos (Woodbury, N.Y.)·2023

Same author

Role of cyclooxygenases 1 and 2 in the maintenance of colonic mucosal integrity in an experimental colitis model.

Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas·2023

Same author

Thermodynamic uncertainty relations in mesoscopic devices.

Physical review. E·2023

Same author

Interaction between a robot and Bunimovich stadium billiards.

Scientific reports·2022

Same author

Multifractal magnetoconductance fluctuations in mesoscopic systems.

Physical review. E·2021

Same author

Expression profiles of immunity and reproductive genes during transition period in Holstein cattle.

Reproduction in domestic animals = Zuchthygiene·2017

Search research articles

Related Experiment Video

Updated: May 8, 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

Anticorrelation for conductance fluctuations in chaotic quantum dots.

A L R Barbosa¹, M S Hussein, J G G S Ramos

¹Departamento de Física, Universidade Federal Rural de Pernambuco, Dois Irmãos, 52171-900 Recife, Pernambuco, Brazil.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|August 16, 2013

Summary

We studied electronic transport in chaotic quantum dots, finding that tunnel barriers affect conductance fluctuations. These fluctuations can be depleted or amplified, and even show anticorrelation in some cases.

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

Related Experiment Videos

Last Updated: May 8, 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

Area of Science:

Mesoscopic electronic transport
Quantum chaos
Condensed matter physics

Background:

Understanding electron transport in quantum dots is crucial for developing quantum devices.
The behavior of conductance fluctuations in chaotic systems is complex and depends on various parameters.

Purpose of the Study:

To investigate correlation functions of mesoscopic electronic transport in open chaotic quantum dots.
To analyze the influence of finite tunnel barriers and their crossover between Wigner-Dyson ensembles on conductance fluctuations.

Main Methods:

Utilizing an analytical stub formalism to model the system.
Examining parametric variations of electron energy and magnetoconductance fields.

Main Results:

Demonstrated the emergence of depletion and amplification of conductance fluctuations based on tunnel barrier strength.
Showed that correlation functions of conductance fluctuations can exhibit anticorrelation, even in pure Dyson ensembles.

Conclusions:

Finite tunnel barriers play a significant role in modulating conductance fluctuations in chaotic quantum dots.
The findings provide theoretical insights with potential experimental validation in mesoscopic transport studies.