Quantum spin Hall effect spintronics

量子自旋霍尔效应自旋电子学

• 批准号: 2597135
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2597135
• 关键词: Quantum; spin; Hall; effect; spintronics

In this project we shall investigate the potential for spintronics of the quantum spin Hall (QSH) regime in hybrid nanostructures made by attaching ferromagnetic metal contacts to the edge states of two-dimensional topological insulators. These 2D materials will be formed from semiconducting InAs/GaSb coupled quantum wells. Being able to harness the spin-momentum-locked helical edge states in the QSH regime will have the potential for realising dramatic reductions in the power consumption of classical ICT hardware, and in the longer term offer the prospect of being useful for topological quantum computing. In this project the student will be trained in and carry out nanofabrication of hybrid semiconductor/ferromagnet devices, cryogenic measurements, and magnetic film deposition and characterisation.

在这个项目中，我们将研究通过将铁磁金属接触连接到二维拓扑绝缘体的边缘态而制成的混合纳米结构中量子自旋霍尔（QSH）体系的自旋电子学潜力。这些 2D 材料将由半导体 InAs/GaSb 耦合量子阱形成。能够利用 QSH 体系中的自旋动量锁定螺旋边缘态将有可能实现经典 ICT 硬件功耗的大幅降低，并从长远来看为拓扑量子计算提供了有用的前景。在该项目中，学生将接受培训并进行混合半导体/铁磁体器件的纳米制造、低温测量以及磁性薄膜沉积和表征。