在聚化物中发现的具有116K的Tc的超导性
Ke Lu1,2, Xin He1,2,3, Changling Zhang1,2
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
National science review
|June 17, 2024
概括
在116K和184GPa的聚化物中发现了超导性. 这种高温超导体的临界温度仅次于同类化合物中硫化的临界温度.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 高压科学科学 高压科学
背景情况:
- 超导性 (SC) 是一种量子力学现象,其中一个材料在临界温度以下表现出零电阻.
- 寻找高温超导体是材料科学的主要焦点,化物在极端压力下特别有前途.
- 主要组元素的反,以前没有因为其聚化物超导性而被探索过.
研究的目的:
- 在实验中合成和表征聚化物中的超导性.
- 为了确定这个新材料的临界温度 (Tc) 和其他超导特性.
- 为了比较聚化与其他已知的高压化的超导性能.
主要方法:
- 使用钻石芯和激光加热系统合成反聚化物.
- 在现场高压传输测量作为温度的函数.
- 应用磁场研究探测超导特性并确定超导连贯长度.
主要成果:
- 首次实验观察了聚化物中的超导电性.
- 在184GPa的压力下记录了116K的临界温度 (Tc).
- 使用金兹堡-兰道方程,超导连贯长度估计大约为40 Å.
结论:
- 抗聚化物是一种新发现的高压超导体.
- 它的临界温度为116K,使其成为迄今为止发现的最高Tc超导体之一,仅次于硫化物.
- 这一发现扩大了高Tc聚化超导体的家族,并为材料科学研究提供了新的途径.
更多相关视频
04:22Author Spotlight: Advancements in High-Performance Thermoelectric Thin Films Through Radio Frequency Magnetron Sputtering
Published on: May 17, 2024
2.8K
12:30Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
9.0K
相关概念视频
01:24Superconductor
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
01:28Types Of Superconductors
972
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...
972
02:32Bonding in Metals
47.1K
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”.
47.1K