题目：Quantum Mechanical Magnetic Tunneling, Spintronics, and Application

报告人：Professor Gang Xiao 

时 间：1月19日（周六）上午9:00
地 点：英杰交流中心星光厅

报告内容摘要：
    In spintronics, electrons in a device can be manipulated by internal and external magnetic fields or spin-polarized electrical currents. The advantage of spin-based electronics or spintronics is that they are nonvolatile compared to charge-based electronics, and quantum-mechanical computing based on spintronics could achieve speeds unheard of with conventional computing. Spintronics will also lead to the emergence of ultra-sensitive magnetic sensors and non-volatile memory devices, creating exciting new and exciting applications. I will review the development of spintronics and state-of-the-art magnetic sensors based on magnetic tunneling junctions. Older sensing technologies suffer from varying deficiencies such as large size, poor sensitivity, and slow speed. Magnetic tunnel junction (MTJ) is a disruptive sensing device. It is a tiny “dot” on silicon, invisible to the naked eye, and can be integrated with other thin-film devices such as an integrated circuit. The physics of magnetic quantum tunneling dictates that MTJ can function up to multiple GHz. The large magnitude of the magnetoresistance effect in MTJ has created an excellent opportunity for the creation of a new class of high-performance sensor devices.

报告人简介：
    Dr. Gang Xiao is a Professor of Physics and Engineering at Brown University and the Director of Brown’s Center for Nanoscience and Soft Matter. He is a Fellow of the American Physical Society and an Inducted Member of the Johns Hopkins Society of Scholars. Dr. Xiao joined the faculty at Brown in 1989. He pursued his doctoral and postdoctoral studies at Johns Hopkins University. He was an Alfred P. Sloan Fellow from 1990 to 1992. He received a five-year National Science Foundation Young Investigator Award in 1992. He was a recipient of the Outstanding Young Scientist award from the Overseas Chinese Physicists Association in 1995. He received an IBM Partnership Award during 1997 to 1999. He has been a Visiting Scientist at IBM Watson Research Center, and a Visiting Professor at Hong Kong University of Science and Technology. Professor Xiao has published over 196 papers in scientific journals with total citations of 8850 and an H-index (Impact Factor) of 48.
    Dr. Xiao started Micro Magnetics, Inc. in 1998 with the goal of commercializing technology developed in his lab at Brown. Dr. Xiao’s research interests are magnetism and magnetic materials, novel magnetic devices, spintronics, and nanotechnology. He has 30 years of experience in R&D. He holds seven patents related to spintronics. He is in charge of technology strategy and offers technical expertise in the development of company’s products.