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Related Concept Videos

Superconductor01:24

Superconductor

2.0K
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...
2.0K
Types Of Superconductors01:28

Types Of Superconductors

1.8K
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...
1.8K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

4.9K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
4.9K
Magnetic Force On A Current-Carrying Conductor01:25

Magnetic Force On A Current-Carrying Conductor

5.4K
Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor carrying a current creates a magnetic field around it.
Consider a compass placed near a current-carrying wire. The wire experiences a force that aligns the needle of the compass tangentially around the wire. Thus, the current-carrying wire produces concentric circular loops of magnetic field. The magnetic field generated by a wire can be...
5.4K
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

6.4K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
6.4K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

6.8K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
6.8K

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Toward Superconducting Critical Current by Design.

Ivan A Sadovskyy1, Ying Jia1, Maxime Leroux1

  • 1Materials Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA.

Advanced Materials (Deerfield Beach, Fla.)
|April 1, 2016
PubMed
Summary
This summary is machine-generated.

This study introduces a critical-current-by-design approach to optimize superconductor performance. By analyzing vortex dynamics, it predicts defect landscapes for enhanced critical current in high-temperature superconductors.

Keywords:
critical current by designhigh-temperature superconductorstime-dependent Ginzburg-Landauvortex dynamics

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Superconductivity

Background:

  • Superconductors are crucial for advanced technologies, but their performance is limited by vortex dynamics.
  • Understanding and controlling vortex behavior is key to enhancing critical current density.

Purpose of the Study:

  • To present a novel critical-current-by-design paradigm.
  • To elucidate the vortex dynamics governing bulk critical current in superconductors.
  • To predict optimal defect landscapes for targeted superconductor applications.

Main Methods:

  • Experimental critical current measurements on commercial high-temperature superconductors.
  • Large-scale time-dependent Ginzburg-Landau simulations.
  • Analysis of vortex dynamics and defect landscape interactions.

Main Results:

  • Established a predictive model for critical current based on defect engineering.
  • Identified key vortex dynamics influencing bulk critical current.
  • Demonstrated the efficacy of the critical-current-by-design paradigm.

Conclusions:

  • The critical-current-by-design paradigm offers a pathway to tailor superconductor properties.
  • Optimizing defect landscapes through understanding vortex dynamics is feasible.
  • This approach has significant implications for the development of next-generation superconducting materials.