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Related Concept Videos

Superconductor01:24

Superconductor

1.7K
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...
1.7K
Types Of Superconductors01:28

Types Of Superconductors

1.6K
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...
1.6K
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.7K
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,...
1.7K
Ferromagnetism01:31

Ferromagnetism

3.0K
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...
3.0K
Precipitation Gravimetry01:03

Precipitation Gravimetry

14.0K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
14.0K
Properties of Transition Metals02:58

Properties of Transition Metals

29.5K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
29.5K

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Recent progress in nickelate superconductors.

Yuxin Wang1,2, Kun Jiang1,2, Jianjun Ying3,4

  • 1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

National Science Review
|October 13, 2025
PubMed
Summary
This summary is machine-generated.

Superconductivity in nickelate compounds offers new high-temperature superconductor research avenues. This review covers infinite layer, bilayer, and trilayer nickelate systems, highlighting progress and challenges in this emerging field.

Keywords:
electronic structurenickelate superconductorsuperconductivity

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid-State Chemistry

Background:

  • The discovery of superconductivity in nickelate compounds has significantly advanced the study of high-temperature superconductors.
  • Nickelates present a promising new class of materials for exploring novel superconducting mechanisms.

Purpose of the Study:

  • To provide a comprehensive overview of recent advancements in nickelate superconductivity research.
  • To discuss various nickelate systems, including infinite layer, bilayer, and trilayer structures.
  • To identify emerging trends, challenges, and open questions in the field.

Main Methods:

  • Review of existing literature on nickelate superconductivity.
  • Analysis of superconducting properties in different nickelate structures (infinite layer, bilayer, trilayer).
  • Discussion of materials synthesis and characterization techniques.

Main Results:

  • Detailed examination of the hole-doped LaNiO[Formula: see text] system as the starting point for nickelate superconductivity.
  • Exploration of superconducting phases in bilayer La[Formula: see text]Ni[Formula: see text]O[Formula: see text] under high pressure and in thin films.
  • Investigation of trilayer La[Formula: see text]Ni[Formula: see text]O[Formula: see text] and related multilayer nickelates.

Conclusions:

  • Nickelate superconductivity research is rapidly evolving, with diverse material structures showing promise.
  • Key challenges remain in materials synthesis and characterization, hindering a full understanding of superconducting mechanisms.
  • Future research should focus on addressing these limitations to uncover the fundamental drivers of superconductivity in these complex oxides.