一、报告题目

Conventional andin-situquantum transport measurement of two-dimensional materials

二、报告人

陈剑豪

三、报告时间

2019年4月4日13：30-15：00

四、报告地点

中心校区知新楼C座7层报告厅

五、报告摘要

Due to the very large surface to bulk ratio, two-dimensional (2D) materials has a greatly enhanced response to stimulus from the environment. This presentation will focus on our recent progress in quantum transport measurement of 2D mesoscopic devices in controlled environment. By encapsulation of the 2D materials, we ensure high quality and stability of our devices for conventional transport measurements, which revealed rich physics and a variety of potential applications for 2D materials. Byin-situmanipulation of sample surface during a single experimental run, we can continuously tune the interactions of the 2D electronic systems and observe the resultant changes in their electronic states. As an example, magneto-transport experiment within-situcobalt adsorption and hydrogenation of graphene will be discussed, and the stark contrast of the electronics states between metal decorated graphene and covalently modified graphene is demonstrated. Conventional transport and optoelectronic measurements of 2D topological materials, specifically, transition metal tellurides, will also be discussed.

Reference：

· Nature Materials, in press,DOI: 10.1038/s41563-019-0296-5 (2019)

· Advanced Materials30, 1706402 (2018)

· Advanced Materials30, 1707152 (2018)

· ACS Nano12, 4055 (2018)

· 2D Materials5, 044003 (2018)

· 2D Materials4, 021018 (2017)

· 2D Materials4, 015003 (2017)

· CPB27, 067304 (2017)

六、邀请人

王以林教授

七、报告人简介

陈剑豪，北京大学研究员、博士生导师。2004年毕业于浙江大学竺可桢学院，2009年在马里兰大学获物理博士学位(Ellen Williams Group)，2009年至2010年在马里兰大学任博士后(Michael Fuhrer Group)，2010年至2012年在加州大学伯克利分校及洛伦兹伯克利国家实验室任博士后(Alex Zettl Group)。主要研究方向为低维电子材料及纳米器件的物理与应用，原子尺度上的材料物性调控，以及超高真空条件下的原位输运表征。论文发表在包括Nature Physics、Nature Nanotechnology、Nature Communications、Physical Review Letters、Advanced Materials等杂志上。其中6篇文章入选ESI高引用文章，SCI总引用超过5500次。