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Magneto-optics of atomically thin two-dimensional materials

原子薄二维材料的磁光

基本信息

批准号：
2263656
负责人：
金额：
--
依托单位：
University of Sheffield
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2019
资助国家：
英国
起止时间：
2019 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2263656
关键词：
Magneto optics atomically thin two

项目摘要

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.

随着石墨烯的发现，一大家族的层状晶体引起了极大的关注。这些材料的性质从超导体和金属，到半导体和绝缘体。由于晶体极薄，电子激发的量子限制对这种少原子层形式的量子材料的性质有强烈的影响。令人惊讶的是，存在一种层状铁磁材料，即使在原子单层形式下也能保持其铁磁特性。这种二维材料将彻底改变电子、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相结合。在这个博士项目中，学生将探索新型铁磁少原子层材料，将致力于推进其制造，并将开发将这些材料与其他二维单层晶体（包括磁性材料，石墨烯和过渡金属二硫族化合物（TMDs））结合的方法。目标是制造和探索新型光电器件，利用二维铁磁材料在纳米尺度上产生的非常大的局部磁场。实验目标之一将是学习如何使用光学表征技术，如拉曼散射、光致发光和反射率对比来揭示少层材料中的磁秩序。