高效率的自旋式太赫兹发射器采用II型迪拉克半金属PtTe的大型自旋室导电性
Pinki Yadav1, Chen Xinhou2, Shubham Bhatt1
1Center for Applied Research in Electronics, Indian Institute of Technology Delhi, Delhi 110016, India.
Nano letters
|February 8, 2024
概括
过渡金属二甲基化物 (TMDs) 显示出对自旋电子学有希望. 研究人员使用PtTe2,一种II型迪拉克半金属,开发了高效的旋转式太赫兹 (THz) 发射器,实现了增强的THz发射.
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
- 这就是Spintronics.
背景情况:
- 过渡金属二甲基化物 (TMD) 具有显著的自旋电荷相互转换能力,这使得它们对自旋电子设备具有吸引力.
- 基于TMD的当前旋转式太赫兹 (THz) 发射器由于高电阻和低旋转霍尔导电性 (SHC) 的限制,导致低于最佳的THz发射.
研究的目的:
- 调查二型迪拉克半金属PtTe2的潜力,作为一个有效的材料,用于自旋式太赫兹 (THz) 发射器 (STEs).
- 为了利用 PtTe2 的独特电子特性,提高旋转到充电的转换和THz 排放.
主要方法:
- 使用二化物 (PtTe2) 和 (Co) 异构结构制造自旋式太赫兹发射器.
- 对THz排放性能的表征,比较PtTe2/Co-STE与传统 (Pt) /Co-STE的性能.
主要成果:
- PtTe2表现出大量的SHC,这是由于其电阻低,表面状态和局部Rashba效应,从而提高了自旋到电荷转换效率.
- 与Pt/Co-STE相比,PtTe2/Co-STE的峰值THz排放量大约高出15%,几乎是同样厚的Pt/Co-STE的两倍.
- 增强的THz发射与PtTe2材料中的反旋转霍尔效应有关.
结论:
- 二化 (PtTe2),一种II型迪拉克半金属,是开发高效的自旋电磁特拉赫兹 (THz) 发射器的高效材料.
- 基于PtTe2的STEs的卓越性能为使用半金属TMD的先进THz技术开辟了新的途径.
更多相关视频
09:06Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.1K
04:22Author Spotlight: Advancements in High-Performance Thermoelectric Thin Films Through Radio Frequency Magnetron Sputtering
Published on: May 17, 2024
2.8K
相关概念视频
02:42Valence Bond Theory
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
01:15Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...