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Related Concept Videos

Types Of Superconductors01:28

Types Of Superconductors

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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

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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...
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Equipotential Surfaces and Conductors

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For a conductor in which all charges are at rest, the conductor's surface is equipotential. The electric field is always perpendicular to equipotential surfaces. Therefore, in a conductor with static charges, the electric field just outside the conductor is always perpendicular to the conductor's surface. Any tangential component of the electric field will cause charges to move inside the conductor, which will violate the electrostatic nature of the system. In an electrostatic...
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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.
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The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows:
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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.
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The Noncollinear Path to Two-Dimensional Topological Superconductivity.

Reiner Brüning1, Jasmin Bedow2, Roberto Lo Conte1,3

  • 1Department of Physics, University of Hamburg, 20355 Hamburg, Germany.

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|October 9, 2025
PubMed
Summary
This summary is machine-generated.

Researchers discovered topological superconductivity in a novel two-dimensional magnet-superconductor hybrid system. This noncollinear magnetic spiral offers potential for controlling edge modes in future quantum devices.

Keywords:
chiral edge modesnoncollinear magnet-superconductor hybridsspin spiralsspin-polarized scanning tunneling spectroscopytopological nodal-point superconductors

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Technologies

Background:

  • Two-dimensional magnet-superconductor hybrids (2D-MSH) are crucial for topological quantum technologies and superconducting spintronics.
  • Previous research primarily focused on 2D-MSH systems with collinear magnetic layers.

Purpose of the Study:

  • To investigate topological superconductivity in a noncollinear 2D-MSH system.
  • To explore the properties of edge modes in such systems.

Main Methods:

  • Low-temperature spin-polarized scanning tunneling spectroscopy.
  • In-depth theoretical studies.

Main Results:

  • Discovery of topological superconductivity in a noncollinear system featuring an Fe monolayer on a superconducting Ta(110) substrate.
  • Identification of a topological nodal-point superconducting phase with low-energy edge modes.
  • Observation of magnetization direction-dependent dispersion in edge modes due to the noncollinear spin texture.

Conclusions:

  • The noncollinear MSH system exhibits topological nodal-point superconductivity.
  • Edge modes show tunable chirality, controllable by manipulating the magnetic spiral's spatial shift.
  • This system holds promise for developing novel MSH-based quantum devices.