中国科学院合肥物质科学研究院强磁场科学中心坐落于安徽省合肥市风景秀丽的科学岛，2008年4月30日经中国科学院批准成立，依托中国科学院合肥物质科学研究院管理（科发人教字〔2008〕133号），其前身是2005年12月20日成立的“合肥强磁场科学技术研究中心”。中心目标：发展... 更多简介 +
稳态强磁场实验装置（Steady High Magnetic Field Facility，简称SHMFF）是国家发改委支持的“十一五”国家重大科技基础设施。SHMFF法人单位是中国科学院合肥物质科学研究院，共建单位是中国科学技术大学。各项任务以中国科学院强磁场科学中心为依托... 更多简介 +
时间：12月9日 今天下午3:00
地点：强磁场磁体装备厅203会议室
报告人：陈宇林教授（牛津大学）
报告题目：Visualizing Electronic Structures of Topological Quantum Materials
报告摘要: The discovery of materials with novel properties is one of the most fascinating aspects of physics, and such findings have always played important roles in the development of science and human life. Two recent examples are graphene and topological insulators. Interestingly, both materials possess 2D Dirac fermions; and topological insulators further show distinct topology in their electronic band structures. With the swift development in both fields, two questions have been naturally raised:
i). Does there exist a 3D counterpart of graphene, or a “3D graphene”?
ii).Besides topological insulators, can one find other materials that have unusual topology in their electronic structures?
Remarkably, the answer to both questions can lie on a same type of novel quantum matter – the topological semi-metals - which not only processes 3D Dirac or Weyl fermions in the bulk (in contrast to the 2D Dirac fermions in graphene and topological insulators), but also shows unique surface states result from its non-trivial topology of the bulk electronic structure.
In this talk, Prof Chen will show that by using advanced photoemission spectroscopy with high energy, momentum, and time resolution, they were able to directly visualize the non-trivial electronic structures and unusual dynamics in topological insulators and topological semi-metals recently discovered. Finally, Chen will briefly discuss the application potentials of these unusual materials.
报告人简介:
Academic background:
Staff Scientist: SLAC National Accelerator Laboratory, USA
Associate Staff Scientist: SLAC
Post-doctoral Research Fellow: SLAC
PhD: Stanford University
BS: University of Science & Technology of China
Research interest:
1、Topological quantum materials
2、Strongly correlated electronic materials
3、High temperature superconductivity
4、Angle resolved photoemission spectroscopy
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