报告人： Ji-Yan Dai (Departmentof Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon,Hong Kong, P. R. China)

报告题目： Modulation of Transport Properties at Oxide Heterostructures

报告时间：2017年12月26日上午10:00

报告地点：910-308

摘要

The discovery of the two dimensional electron gas (2DEG)at the interface between two band insulators LaAlO₃ (LAO) and SrTiO₃ (LAO) triggered intensive researches on this system, and intriguing electronicproperties have been found in this heterointerface. In this interfacial 2DEGsystem, the transport properties of the LAO/STO interfacial conducting statesare extremely sensitive to the interfacial structure and LAO surface state, andthe modulation of surface state has been shown to have a great influence on thetransport properties of the interfaces. In this seminar, the LAO/STO surfacemodulation by means of polar liquids, metal nanoparticles, gas and strain willbe reported. Our results promise the potential application of these oxideheterostructures in electronic devices.

简介

Dai Jiyan is currently a Professor of the Department of Applied Physics at TheHong Kong Polytechnic University. Prof. Dai’s main research interests include nanomaterialsfabrication and application, especially functional oxide thin films anddevices. He received his B.Sc. degree in physics from Fudan University in 1988,his M.S. degree in Electronic Engineering from Tsinghua University in 1991, andhis Ph.D. degree in Materials Physics from the Chinese Academy of Sciences in1994. He has three years postdoctoral research experience at Northwestern University,and after one year working in the Institute of Materials Research andEngineering Singapore, he joined Chartered Semiconductor Manufacturing Ltd. ofSingapore. Since 2001, Prof. Dai has beenworking at the Department of Applied Physics, The Hong Kong PolytechnicUniversity. He has published more than 200 journal papers with citations ofmore than 5000.

Contact: Prof. Mario Lanza

责任编辑： 杨娟