Quantum spin Hall effect spintronics

在这个项目中，我们将研究通过将铁磁性金属接触连接到二维拓扑绝缘体的边缘状态而制成的混合纳米结构中量子自旋霍尔(QSH)区域的自旋电子学的潜力。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的螺旋边态，将有可能实现经典ICT硬件的功耗大幅降低，从长远来看，这将为拓扑量子计算提供有用的前景。在这个项目中，学生将在半导体/铁磁混合器件的纳米制造、低温测量以及磁性薄膜的沉积和表征方面进行培训和实施。

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.