Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Current Density01:21

Current Density

4.2K
The total amount of current flowing through one unit value of a cross-sectional area is referred to as current density. If the current flow is uniform, the amount of current flowing through a conductor is the same at all points along the conductor, even if the conductor area varies. The current density consists of the local magnitude and direction of the charge flow, which varies from point to point. Current density is measured in amperes per meter square, and direction is defined as the net...
4.2K
Boundary Conditions for Current Density01:25

Boundary Conditions for Current Density

937
Current density becomes discontinuous across an interface of materials with different electrical conductivities. The normal component of the current density is continuous across the boundary.
937
Superconductor01:24

Superconductor

1.2K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
1.2K
Continuity Equation01:20

Continuity Equation

943
The total amount of current flowing per unit cross-sectional area is called the current density. Hence, the current passing through a cross-sectional area can be written as the surface integral of the current density.
943
Types Of Superconductors01:28

Types Of Superconductors

1.1K
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
1.1K
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current01:14

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

925
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
925

You might also read

Related Articles

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

Sort by
Same author

Near-Unity Chiral Lasing Enabled by Quasi-Bound States in the Continuum.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

ANN-Based Online Parameter Correction for PMSM Control Using Sphere Decoding Algorithm.

Sensors (Basel, Switzerland)·2026
Same author

Designing functional magnetic cloaks for real-world geometries.

Science advances·2025
Same author

Nanowires Designed by Electrophoretic Deposition of Core-Shell Silver-Graphene Quantum Dots Nanohybrids on Conductive Electrodes.

Langmuir : the ACS journal of surfaces and colloids·2025
Same author

Nanofabrication for Nanophotonics.

ACS nano·2025
Same author

Assessment of neuronal and glial serum biomarkers in myelin oligodendrocyte glycoprotein antibody-associated disease: the MULTIMOGAD study.

Journal of neurology, neurosurgery, and psychiatry·2025

Related Experiment Video

Updated: Aug 16, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

9.7K

Critical Current Density in d-Wave Hubbard Superconductors.

José Samuel Millán1, Jorge Millán1, Luis A Pérez2

  • 1Facultad de Ingeniería, Universidad Autónoma del Carmen, Cd. del Carmen C.P. 24180, Campeche, Mexico.

Materials (Basel, Switzerland)
|December 23, 2022
PubMed
Summary
This summary is machine-generated.

Researchers used the Generalized Hubbard Model to study high critical temperature d-wave superconductors. They found critical current densities near 100 K, with values varying by direction.

Keywords:
Hubbard modelcritical current densityd-wave superconductors

More Related Videos

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
04:51

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

2.8K
High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

7.8K

Related Experiment Videos

Last Updated: Aug 16, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

9.7K
Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
04:51

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

2.8K
High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

7.8K

Area of Science:

  • Condensed Matter Physics
  • Materials Science

Background:

  • High critical temperature superconductors are crucial for advanced technologies.
  • Understanding their electrical properties, particularly critical current density (Jc), is essential for practical applications.

Purpose of the Study:

  • To evaluate the electrical current density of high critical temperature d-wave superconductors using the Generalized Hubbard Model.
  • To establish a maximum limit for the critical current density achievable by d-wave superconductors.

Main Methods:

  • Application of the Generalized Hubbard Model on a square lattice.
  • Hamiltonian parameter tuning to match experimental critical temperatures (Tc) near 100 K.
  • Analysis of quasiparticle dispersion relation E(k) and its gradient to determine electron velocity.

Main Results:

  • The model achieved a good quantitative fit with macroscopic superconducting properties like Tc and Jc.
  • A d-wave symmetry in pairing interaction was found to influence Jc.
  • Maximum Jc values were calculated: ~1.41×10^8 A/cm^2 near the antinodal direction and ~2.21×10^9 A/cm^2 along the nodal direction.

Conclusions:

  • The Generalized Hubbard Model provides an effective framework for studying d-wave superconductors.
  • The study establishes directional dependencies and maximum limits for critical current density in these materials.
  • Findings contribute to the understanding and potential application of high-Tc d-wave superconductors.