磁学室学术报告(2015-7)

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[磁学室学术报告] Probing Fundamental Magnetism with Advanced Spectroscopy Techniques
时间: 2015年10月16日 14:00
地点: 中科院物理研究所 M236会议室
报告人: Dr. Wenqing Liu

York‐Nanjing Joint Centre (YNJC) for spintronics and nanoengineering, The University of York

简介
10. 2015 –                  Visiting Researcher,Physics Department, Hong Kong University, HK
10. 2014 –                  Research Associate & Assistant Director, York--Nanjing Joint Centre (YNJC) for spintronics and nanoengineering, York, UK
10. 2010 – 09. 2014   Ph. D in Electronics engineering, University of York, York, UK
09. 2006 – 06. 2010   BSc. In Theoretical physics, Nanjing University, Nanjing, China

摘要
Spintronics is an emergent interdisciplinary topic for the studies of spin-based, rather than or in addition to charge-only-based physical phenomena, which promises not only new capabilities of electronic devices, but also abundantly rich fundamental science. For applied materials, the spin ordering has long been investigated within the context of conventional ferromagnetic metals, while the study of spin generation, relaxation, and spin-orbit coupling in non-magnetic materials has taken off rather recently with the advent of spintronics and it is here that many novel two dimensional (2D) systems can find their greatest potential in both science and technology. In the pursuit for such goals, the intrinsic material properties (e.g. mobility, anisotropy, conductivity etc.) are important indicators and the artificially synthetized hybrid systems (e.g. multilayers, hybrid systems, and nano-structures etc.) are valuable models for studying spin-dependent phenomena and could potentially be used as actual components for an eventual spintronic device.
   The rise of spintronics has been closely linked with the development of instrumentation in nano-characterization over the past twenty years. The experimental side of spintronics research today has moved to a point where the paramount urgency is to use materials of the highest perfection and homogeneity as well as analysis tools with atomic sensitivity. Such criteria require usually exclusive techniques, dedicated equipment and extreme physical conditions, such as ultra high vacuum, low temperatures, and high fields, etc. This talk introduce one of the most advanced experimental tools, i.e. the synchrotron-based magnetic dichroism technique, which has facilitated some studies of many cutting edge subjects of spintronics, such as the heterojunction interfacial magnetism, magnetic proximity effect, magnetism in diluted magnetic semiconductors (DMSs), doped topological insulators, half-metallic alloys, magnetic domain structures, and spin transfer torque (STT) effect

联系人: M06 组 柴一晟 副研究员 (010-82649088)