在批量3R-TaSe2中通过扫描道光谱学观察二维II型超导
Xinyu Huang1, Liangguang Jia1, Xuan Song1
1School of Integrated Circuits and Electronics, MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices, Beijing Institute of Technology, Beijing 100081, China.
The journal of physical chemistry letters
|August 8, 2023
概括
这项研究揭示了3R-二化 (3R-TaSe2) 是一种II型超导体. 这种超导性在强磁场中持续存在,表现出异构性质和0.58K以上的过渡.
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
- 超导电性 超导电性 超导电性
背景情况:
- 3R-二二化物 (3R-TaSe2) 是一种范德瓦尔斯材料,有可能具有新的电子性质.
- 了解层级材料中的超导机制对于开发先进技术至关重要.
研究的目的:
- 为了研究3R-TaSe2.2的电子特性和超导性.
- 描述3R-TaSe2在可变温度和磁场下的行为.
主要方法:
- 使用了低温和矢量磁场扫描道显微镜/光谱 (STM/S).
- 样品的准备涉及超高真空 (UHV) 脱皮和"现场"转移.
主要成果:
- 在4.2K观察到3×3电荷密度波形,具有金属特征.
- 3R-TaSe2表现出II型超导性,过渡度高于0.58K.
- 超导性是异构的,持续到2.5 T (在平面内) 和0.7 T (在平面外) 的磁场.
结论:
- 3R-TaSe2表现出强大的异构型超导性.
- 这些发现有助于理解3R相范德瓦尔斯材料中的超导性.
更多相关视频
11:33All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
9.7K
04:51Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
Published on: July 8, 2021
2.8K
相关概念视频
01:28Types Of Superconductors
1.0K
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...
1.0K
01:24Superconductor
1.2K
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...
1.2K