~~2014 IEEE Magnetics Society Distinguished Lecturer Program Host: Prof. Vincent Harris 442 Dana, 5:00 PM, Thursday, October 23, 2014
Dr. Ron Jansen
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
Worldwide efforts are underway to create a revolutionary and energy-efficient information technology in which digital data is represented by the spin orientation of electrons. Implementing spin functionality in silicon, the mainstream semiconductor, has the potential to create broad impact. Remarkable advances in the creation and control of spin polarization in silicon have therefore generated much excitement. This lecture provides a transparent picture of silicon spintronics, including the key developments and achievements, our current understanding, as well as the unsolved puzzles and challenges that stimulate researchers in the field. First, the basic idea of spin-based information technology and silicon spintronics is introduced. Ferromagnets have non-volatile memory func¬tionality, whereas semiconductors provide amplification and transis¬tor action. What if we integrate ferromagnets and silicon — magnetic memory and logic computing? Then the main building blocks are described: one needs to be able to create spin polarization in the silicon, to manipulate it, and thereafter detect the spins. The generation of a spin flow by electrical means (driven by a bias voltage) or thermal means (driven by a heat flow) are discussed. Ferromagnetic tunnel contacts are shown to provide a robust method to do this, at room temperature. The lecture concludes with a prospect on future developments, which certainly includes more surprises as silicon spintronics comes of age.
Dr. Ron Jansen received a PhD in Experimental Physics from the University of Nijmegen (The Netherlands) in 1997, and was a postdoctoral associate at the Massachusetts Institute of Technology (MIT, Cambridge, USA). After that he moved to the University of Twente (The Netherlands), where he became a tenured assistant professor, associate professor, leader of the NanoElectronics Research Chair and group leader with the Netherlands Foundation for Fundamental Research on Matter (FOM). Since 2010, he works at the National Institute of Advanced Industrial Science and Technology (AIST, Tsukuba, Japan), where he is now a prime senior researcher (首席研究員) at the Spintronics Research Center. He has published 100+ technical articles in peer-reviewed journals, incl. book chapters and reviews, and given more than 110+ invited scientific presentations. He received personal award grants from the Royal Netherlands Academy of Arts and Sciences and from the Netherlands Organization for Scientific Research, and is IEEE Magnetics Society Distinguished Lecturer for 2014. He served on international advisory boards and program committees of various international conferences in magnetism, semiconductor devices and spintronics. He was editor of IEEE Transactions on Magnetics and the European Journal of Applied Physics and is a member of the IEEE Magnetics Society.
Refreshments will be served at 4:45 PM prior to the event.