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Related Concept Videos

Types Of Superconductors01:28

Types Of Superconductors

1.4K
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...
1.4K
Superconductor01:24

Superconductor

1.5K
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...
1.5K
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.6K
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,...
1.6K
Ferromagnetism01:31

Ferromagnetism

2.7K
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...
2.7K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

3.7K
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.
3.7K

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Recent Advances in 2D Superconductors.

Dong Qiu1, Chuanhui Gong1, SiShuang Wang1

  • 1State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China.

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

Superconductivity in two-dimensional (2D) materials is rapidly advancing due to unique properties like high transition temperatures. This review explores various 2D superconducting types and mechanisms, offering insights for future research.

Keywords:
2D materialsheterostructuresmoiré superlatticessuperconductivity

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Phenomena

Background:

  • Two-dimensional (2D) materials exhibit remarkable superconducting properties, including high transition temperatures (Tc) and enhanced critical magnetic fields (Bc).
  • Understanding the mechanisms driving superconductivity in these materials is crucial for technological advancement.
  • Existing research focuses on manipulating sample thickness, creating heterostructures, and altering carrier density through electric fields or chemical doping.

Purpose of the Study:

  • To introduce and categorize diverse types of 2D superconductivity and their distinct characteristics.
  • To provide a comprehensive overview of recent advancements and underlying mechanisms in 2D superconductivity.
  • To offer a forward-looking perspective on the field based on current academic literature.

Main Methods:

  • Literature review and synthesis of recent research findings on 2D superconductivity.
  • Categorization of superconductivity based on material type and physical phenomena.
  • Analysis of various experimental and theoretical approaches used to study 2D superconductors.

Main Results:

  • Detailed introduction to conventional Bardeen-Cooper-Schrieffer superconductivity in ultrathin films.
  • Exploration of high-Tc superconductivity in Fe-based and Cu-based 2D systems.
  • Discussion of unconventional superconductivity in twist-angle bilayer graphene, enhanced Bc, and topological superconductivity.

Conclusions:

  • 2D superconductivity encompasses a wide range of phenomena, from conventional BCS theory to novel unconventional mechanisms.
  • Continued exploration of physical parameters and material designs is essential for uncovering new superconducting states.
  • This review aims to consolidate current knowledge and stimulate further research and development in 2D superconductivity.