本项目拟开展团簇修饰石墨烯相关实验并研究该体系的量子霍尔效应。我们将采用解理法、CVD法制备石墨烯，控制制备路径并配合电子束、离子束的方法控制其缺陷类型和数量，然后将质量选择的金属团簇沉积在石墨烯上，测量石墨烯的输运特征及相干条件的改变。我们将精细改变吸附原子、缺陷等特征，给石墨烯引入自旋轨道耦合、磁各向异性并破坏其对称性，尝试在石墨烯中诱发量子自旋霍尔效应、量子反常霍尔效应等多种新型的量子态。本项目的主要特色是1）我们建设了一套团簇束流产生-质量选择-在线修饰-输运测量联合装置，特别适合本项目的开展; 2）调控石墨烯缺陷束缚吸附物，可获得更稳定的结构; 3）采用dimer、trimer或多原子团簇给吸附中心提供更多可调的维度。本项目这些有特色的样品条件和实验方法将为凝聚态物理关注多年的量子自旋/反常霍尔态研究提供新的思路。

The project aims to carry out the work on quantum hall response of decorated graphene. Using exfoliated or CVD-prepared graphene, we create some expected defects by ion irradiation. After the deposition of size selected clusters, the transport of the graphene sheet and its Hall response will be studied. We will tune the absorbates, defects in order to introduce intense spin orbital interaction , magnetic anistropy to the system. Such efforts may lead to the observation of the quantum spin/anomalous Hall effect. The main characters of this project includes 1) we have contructed an instrument to support this work, where the cluster generation, size selection, deposition and transport measurement will be carried out in situ. 2) The defect of graphene will be controled in high vacuum and low temperature. 3) Clusters will provide additional dimension for the Hall engineering of graphene. THis project will benefit the present interest in the quantum spin/anomalous Hall effects among the communities of condensed matter physics.