相关实验视频
Updated: Jun 17, 2026

06:43
Writing and Low-Temperature Characterization of Oxide Nanostructures
Published on: July 18, 2014
10.1K
在全氧化物La2/3Sr1/3MnO3/SrIrO3异构结构中的旋转电荷转换
Sergi Martin-Rio1, Zorica Konstantinovic2, Alberto Pomar1
1Instituto de Ciencia de Materiales de Barcelona, ICMAB-CSIC, Campus Universitario UAB, Bellaterra, Barcelona 08193, Spain.
ACS applied materials & interfaces
|July 21, 2023
概括
研究了在La2/3Sr1/3MnO3/SIO异构结构内的SrIrO3 (SIO) 层中注入旋转. 尽管有界面间传播,但SIO的旋转角与传统材料相比较,这表明它对旋转电子应用的潜力.
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:
- 在全氧化物异构结构中研究自旋注入和自旋电荷转换对于推进自旋电子设备至关重要.
- 拉2/3Sr1/3MnO3 (LSMO) 是一种铁磁性半金属,而SrIrO3 (SIO) 是一种具有潜在自旋轨道合特性的材料.
研究的目的:
- 研究LSMO/SIO异构结构中的自旋注入和自旋电荷转换过程.
- 了解SIO层厚度和界面特征在旋转动态上的作用.
- 为了确定SIO的旋转霍尔角度.
主要方法:
- 铁磁共振 (FMR) 被用于通过LSMO的自旋产生纯自旋电流.
- 高分辨率扫描传输电子显微镜 (HR-STEM) 和能量分散式X射线光谱 (EDS) 用于接口分析.
- 进行了逆自旋霍尔效应 (ISHE) 测量,以探测自旋电荷转换效率.
主要成果:
- 通过FMR线宽的变化,SIO层的旋转注入得到了证实,尽管旋转混合电导率低于传统系统.
- HR-STEM揭示了原子利的接口,而EDS显示了在接口上的La,Ir和Mn的相互扩散.
- ISHE的测量表明,接口特征显著影响旋转注入效率,较低的SIO厚度产生更大的电压信号.
结论:
- 旋转扩散长度/SIO层厚度比率对于高效的旋转注入至关重要.
- 确定SIO的旋转霍尔角 (≈1.12%在250K) 与永久合金/系统的旋转霍尔角相当.
- 作为一个潜在的spin-Hall材料,SIO显示出对spintronic应用的承诺.
相关概念视频
Valence 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...
MOS Capacitor
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

