Speaker:Chen Jianhao, Associate Professor, Peking University

Date:April 4, 2019

Time:1:30 pm -3:00 pm

Location:Lecture Hall, F7, Zhixin Building, Central Campus

Abstract:

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.

Bio:

Chen Jianhao, Associate Professor of ICQM of Peking University, received his physics Ph.D. from University of Maryland at College Park, MD, USA. He was Postdoctoral fellow of Berkeley National Laboratory in University of California at Berkeley and Lawrence during 2010-2013 and Postdoctoral fellow of University of Maryland at College Park from 2009 to 2010.

For more information, please visit:

http://www.view.sdu.edu.cn/info/1020/115999.htm

Edited by: Sun Yangyang