题目：Spin Information Processing with Magnetic Semiconductors

报告人：Prof. Guoxing Miao（Institute for Quantum Computing， Department of Electrical and Computer Engineering，University of Waterloo, Waterloo ON, Canada）

摘要：

Magnetic semiconductor materials are best known for their spin-filtering properties which can effectively create highly polarized spin currents from nonmagnetic electrodes. One can readily generate and analyze spin information through quantum tunneling across these materials. Magnetic semiconductors have another less explored property: interfacial exchange fields onto neighboring electronic systems. Through indirect exchange interaction between the localized magnetic moments and the adjacent free electrons, the electron spins experience an effective magnetic field on the order of tens of Tesla. The effect is especially pronounced on low-dimension systems such as 2DEG and topological materials. We first probe its strength on a cluster of Al nano dots under Coulomb confinement, then proceed to show a number of material and device concepts for spintronic and quantum information applications originating from such spin filtering and interfacial exchange effects.

简介：

Prof. Miao has been an assistant professor at the Institute for Quantum Computing (IQC) and the Department of Electrical and Computer Engineering at the University of Waterloo since 2011. He received his BSc from Shandong University in 1999, and PhD from Brown University in 2006. He then proceeded as a Postdoctoral Associate and later on promoted to Research Scientist at the Francis Bitter Magnet Laboratory at MIT. Prof. Miao’s research focuses on a particular aspect of the electrons – their spin degrees of freedom. His team construct spin-based nanoelectronic (a.k.a., spintronic) devices with improved performances and scalability by taking advantage of the interplay between a few fundamental spin systems: magnetism, superconductivity, and the topological spin state. The program has a strong emphasis on the development of novel materials, in search for an ideal platform that will take us to an era beyond silicon. Prof. Miao has published more than 50 papers, including Nature, Nature Materials, Nature Communications, Physical Review Letters, etc.

时间：2015年1月 27 日上午10：00  

地点：中科院物理研究所M253会议室

联系人：  金奎娟 研究员 （Tel：82648099）

邀请人：   郭海中 副研究员（Tel：82649478）