Magneto-optics of atomically thin two-dimensional materials

简介：随着石墨烯的发现，一个大家族的层状晶体引起了人们的极大关注。这些材料的性质范围从超导体和金属到半导体和绝缘体。这种量子材料的性质在几个原子层的形式是强烈的影响，由于极端的晶体薄的电子激发的量子限制。令人惊讶的是，存在一系列层状铁磁材料，即使在原子单层形式下也能保持其铁磁特性。这种2D材料将彻底改变电子产品、存储设备，并将在量子技术中有广泛的应用，特别是与其他层状半导体的结合。PhD描述：在这个博士项目中，学生将探索新的铁磁少数原子层材料，将致力于推进其制造，并将开发将这些材料与其他2D单层晶体相结合的方法，包括磁性材料，石墨烯和过渡金属二硫属化物（TMD）。其目标是利用纳米尺度上二维铁磁材料产生的非常大的局部磁场来制造和探索新型光电器件。实验目标之一将是学习如何采用光学表征技术，如拉曼散射，光致发光和反射对比，以揭示在几层材料的磁性秩序。

Intro: Following the discovery of graphene, a large family of layered crystals has attracted significant attention. The properties of these materials range from superconductors and metals, to semiconductors and insulators. Properties of such quantum materials in a few-atomic-layer form are strongly influenced by the quantum confinement of the electronic excitations due to the extreme crystal thinness. Surprisingly, a family of layered ferromagnetic materials exists, which preserve their ferromagnetic properties even in an atomic monolayer form. Such 2D materials will revolutionise electronics, memory devices, and will have broad applications in quantum technologies, particularly in combination with other layered semiconductors. Description of PhD: In this PhD project the student will explore novel ferromagnetic few atomic layer materials, will work on advancing their fabrication, and will develop methods for combining such materials with other 2D monolayer crystals, including magnetic materials, graphene and transition metal dichalcogenides (TMDs). The goal is to fabricate and explore novel types of opto-electronic devices taking advantage of very large local magnetic field generated by 2D ferromagnetic materials on the nano-scale. One of the experimental goals will be to learn how to employ optical characterisation techniques such as Raman scattering, photoluminescence and reflectance contrast to reveal the magnetic order in the few-layer material.