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Related Concept Videos

Superconductor01:24

Superconductor

1.1K
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...
1.1K
Types Of Superconductors01:28

Types Of Superconductors

912
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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Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

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The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
272
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.3K
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,...
1.3K
Bonding in Metals02:32

Bonding in Metals

46.2K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
46.2K
Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

4.7K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.7K

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Updated: May 23, 2025

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
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Superconductivity in metal sulfides.

Wei Zhong1, He Zhang2,3, Fang Hong2,3,4

  • 1Center for High Pressure Science & Technology Advanced Research, 10 East Xibeiwang Road, Haidian, Beijing 100193, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|March 7, 2025
PubMed
Summary

Metal sulfides are promising platforms for discovering new superconductors. This review highlights their diverse structures and unique quantum phenomena, crucial for understanding superconductivity.

Keywords:
high pressurequasi-one-dimensional materialssulfidessuperconductivitytwo-dimensional materials

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Area of Science:

  • Condensed matter physics
  • Materials science

Background:

  • Superconductivity and its mechanisms remain challenging areas in physics.
  • Identifying novel superconducting platforms is key to advancing the field.
  • Metal sulfides offer diverse crystal structures and unique properties.

Purpose of the Study:

  • To review and analyze the superconducting properties of various metal sulfides.
  • To highlight metal sulfides as promising platforms for superconductivity research.
  • To explore the interplay between superconductivity and other quantum states in these materials.

Main Methods:

  • Comprehensive literature review of metal sulfide superconductivity.
  • Analysis of crystal structure-property relationships.
  • Discussion of pressure tuning effects on superconductivity.

Main Results:

  • Metal sulfides exhibit diverse dimensionality (1D to 3D) and unique phenomena like chiral and 2D Ising superconductivity.
  • Pressure tuning induces superconductivity in semiconducting and insulating metal sulfides.
  • Competition between charge density waves and superconductivity is observed.

Conclusions:

  • Metal sulfides are versatile materials with rich superconducting properties.
  • They serve as excellent platforms for investigating superconductivity mechanisms.
  • Further research into metal sulfides can lead to breakthroughs in high-temperature superconductivity.