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Related Concept Videos

Ferromagnetism01:31

Ferromagnetism

3.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
3.4K
Types Of Superconductors01:28

Types Of Superconductors

1.7K
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...
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Superconductor01:24

Superconductor

1.9K
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...
1.9K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

5.1K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
5.1K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

4.8K
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...
4.8K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

3.6K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
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Related Experiment Video

Updated: Mar 14, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

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Superconducting exchange coupling between ferromagnets.

Yi Zhu1, Avradeep Pal1, Mark G Blamire1

  • 1Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.

Nature Materials
|September 20, 2016
PubMed
Summary
This summary is machine-generated.

Superconductors can now control magnetism in devices, reversing the usual effect. This discovery in superconductor/ferromagnet heterostructures opens new avenues for superconducting spintronics.

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Area of Science:

  • Condensed matter physics
  • Materials science
  • Spintronics

Background:

  • Superconductor (S)/ferromagnet (FM) heterostructures typically show magnetic control over superconducting properties.
  • Previous research focused on critical temperature and current control in superconducting spin valves (SSVs).

Discussion:

  • This study demonstrates the converse effect: direct superconducting control of the magnetic state in GdN/Nb/GdN SSVs.
  • A model involving antiferromagnetic effective exchange interaction, driven by superconducting condensation energy, explains the observed phenomenon.
  • This mechanism differs fundamentally from conventional spintronic exchange coupling.

Key Insights:

  • Observation of direct superconducting control over magnetic states in GdN/Nb/GdN SSVs.
  • Development of a model explaining the superconducting exchange interaction.
  • Demonstration of a new mechanism for magnetic state control in superconducting spintronics.

Outlook:

  • Potential for novel superconducting spintronic devices with active magnetic control.
  • Further exploration of superconducting exchange interactions in novel heterostructures.
  • Integration of superconducting control into next-generation electronic devices.