报告题目:Novel Magnetism in Some Iridate Compounds
报告人:张世雄 Department of Physics, Indiana University, Assistant Professor
时间:2014年7月8日(星期二) 上午9:30
地点:强磁场中心大楼201会议室
摘要:5d transition-metal-oxide compounds (e.g. iridates) have recently attracted growing interest because of their potential for realizing new topological phases, such as topological Mott insulators and Weyl semimetals, which can possibly arise from the interplay of strong spin-orbit coupling and electron correlation. In order to realize these topological states, it is essential to understand the magnetic properties as the electronic structures are strongly coupled with the magnetic ground states in these compounds. In this talk, I will present our recent studies of the magnetic properties of some important iridates, including the potential Weyl semimetal Y2Ir2O7. In particular, I will present our dc magnetization measurements and electron spin resonance study that suggest the existence of novel magnetic ground states. I will also discuss the possible origins of the magnetic ordering at low temperatures.
报告人简介:张世雄于2004年7月毕业于中国科技大学物理系,后赴美国马里兰大学物理系攻读博士学位并于2007年12月取得学位。在2008-2012年期间,他先在美西北大学材料系担任博士后, 后又在洛斯阿拉莫斯国家实验室担任院长资助博士后。2012年8月开始在印第安纳大学物理系担任助理教授。他当前的研究领域主要集中在新型纳米材料的制备与物理性质的测量。
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